Sr3(Co0.5Nb0.5)2O7 is (La,Ba)CuO4-derived structured and crystallizes in the triclinic P1 space group. There are twelve inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 9-coordinate geometry to one O(10), one O(11), one O(12), one O(21), one O(22), one O(25), one O(28), one O(5), and one O(9) atom. In the second Sr site, Sr(2) is bonded in a 9-coordinate geometry to one O(10), one O(11), one O(12), one O(21), one O(22), one O(26), one O(27), one O(6), and one O(9) atom. In the third Sr site, Sr(3) is bonded in a 9-coordinate geometry to one O(10), one O(11), one O(12), one O(23), one O(24), one O(25), one O(27), one O(7), and one O(9) atom. In the fourth Sr site, Sr(4) is bonded in a 9-coordinate geometry to one O(10), one O(11), one O(12), one O(23), one O(24), one O(26), one O(28), one O(8), and one O(9) atom. In the fifth Sr site, Sr(5) is bonded in a 9-coordinate geometry to one O(13), one O(14), one O(17), one O(19), one O(5), one O(6), one O(7), one O(8), and one O(9) atom. In the sixth Sr site, Sr(6) is bonded in a 9-coordinate geometry to one O(10), one O(13), one O(14), one O(18), one O(20), one O(5), one O(6), one O(7), and one O(8) atom. In the seventh Sr site, Sr(7) is bonded in a 9-coordinate geometry to one O(11), one O(15), one O(16), one O(18), one O(19), one O(5), one O(6), one O(7), and one O(8) atom. In the eighth Sr site, Sr(8) is bonded in a 9-coordinate geometry to one O(12), one O(15), one O(16), one O(17), one O(20), one O(5), one O(6), one O(7), and one O(8) atom. In the ninth Sr site, Sr(9) is bonded in a 8-coordinate geometry to one O(1), one O(13), one O(14), one O(17), one O(19), one O(2), one O(3), and one O(4) atom. In the tenth Sr site, Sr(10) is bonded in a 8-coordinate geometry to one O(1), one O(13), one O(14), one O(18), one O(2), one O(20), one O(3), and one O(4) atom. In the eleventh Sr site, Sr(11) is bonded in a 8-coordinate geometry to one O(1), one O(15), one O(16), one O(18), one O(19), one O(2), one O(3), and one O(4) atom. In the twelfth Sr site, Sr(12) is bonded in a 8-coordinate geometry to one O(1), one O(15), one O(16), one O(17), one O(2), one O(20), one O(3), and one O(4) atom. There are four inequivalent Nb sites. In the first Nb site, Nb(1) is bonded to one O(1), one O(21), one O(23), one O(25), one O(26), and one O(9) atom to form NbO6 octahedra that share  a cornercorner with one Nb(3)O6 octahedra,  a cornercorner with one Nb(4)O6 octahedra,  a cornercorner with one Co(1)O6 octahedra, and corners with two equivalent Nb(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 2-9°. In the second Nb site, Nb(2) is bonded to one O(10), one O(2), one O(22), one O(24), one O(25), and one O(26) atom to form NbO6 octahedra that share  a cornercorner with one Nb(3)O6 octahedra,  a cornercorner with one Nb(4)O6 octahedra,  a cornercorner with one Co(3)O6 octahedra, and corners with two equivalent Nb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 1-7°. In the third Nb site, Nb(3) is bonded to one O(11), one O(22), one O(23), one O(27), one O(28), and one O(3) atom to form NbO6 octahedra that share  a cornercorner with one Nb(1)O6 octahedra,  a cornercorner with one Nb(2)O6 octahedra,  a cornercorner with one Co(2)O6 octahedra, and corners with two equivalent Nb(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-7°. In the fourth Nb site, Nb(4) is bonded to one O(12), one O(21), one O(24), one O(27), one O(28), and one O(4) atom to form NbO6 octahedra that share  a cornercorner with one Nb(1)O6 octahedra,  a cornercorner with one Nb(2)O6 octahedra,  a cornercorner with one Co(4)O6 octahedra, and corners with two equivalent Nb(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 2-9°. There are four inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(1), one O(13), one O(16), one O(17), one O(18), and one O(5) atom to form distorted CoO6 octahedra that share  a cornercorner with one Nb(1)O6 octahedra,  a cornercorner with one Co(2)O6 octahedra,  a cornercorner with one Co(4)O6 octahedra, and corners with two equivalent Co(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 2-13°. In the second Co site, Co(2) is bonded to one O(13), one O(15), one O(19), one O(20), one O(3), and one O(7) atom to form distorted CoO6 octahedra that share  a cornercorner with one Nb(3)O6 octahedra,  a cornercorner with one Co(1)O6 octahedra,  a cornercorner with one Co(3)O6 octahedra, and corners with two equivalent Co(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-13°. In the third Co site, Co(3) is bonded to one O(14), one O(15), one O(17), one O(18), one O(2), and one O(6) atom to form distorted CoO6 octahedra that share  a cornercorner with one Nb(2)O6 octahedra,  a cornercorner with one Co(2)O6 octahedra,  a cornercorner with one Co(4)O6 octahedra, and corners with two equivalent Co(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 1-13°. In the fourth Co site, Co(4) is bonded to one O(14), one O(16), one O(19), one O(20), one O(4), and one O(8) atom to form distorted CoO6 octahedra that share  a cornercorner with one Nb(4)O6 octahedra,  a cornercorner with one Co(1)O6 octahedra,  a cornercorner with one Co(3)O6 octahedra, and corners with two equivalent Co(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 2-13°. There are twenty-eight inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Sr(10), one Sr(11), one Sr(12), one Sr(9), one Nb(1), and one Co(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Sr(10), one Sr(11), one Sr(12), one Sr(9), one Nb(2), and one Co(3) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one Sr(10), one Sr(11), one Sr(12), one Sr(9), one Nb(3), and one Co(2) atom. In the fourth O site, O(4) is bonded in a 6-coordinate geometry to one Sr(10), one Sr(11), one Sr(12), one Sr(9), one Nb(4), and one Co(4) atom. In the fifth O site, O(5) is bonded to one Sr(1), one Sr(5), one Sr(6), one Sr(7), one Sr(8), and one Co(1) atom to form distorted OSr5Co octahedra that share corners with two equivalent O(14)Sr4Co2 octahedra, corners with two equivalent O(15)Sr4Co2 octahedra, corners with two equivalent O(19)Sr4Co2 octahedra, corners with two equivalent O(20)Sr4Co2 octahedra, corners with two equivalent O(7)Sr5Co octahedra, corners with two equivalent O(8)Sr5Co octahedra,  an edgeedge with one O(7)Sr5Co octahedra,  an edgeedge with one O(8)Sr5Co octahedra,  an edgeedge with one O(10)Sr5Nb octahedra,  an edgeedge with one O(11)Sr5Nb octahedra,  an edgeedge with one O(12)Sr5Nb octahedra,  an edgeedge with one O(9)Sr5Nb octahedra, edges with two equivalent O(6)Sr5Co octahedra,  a faceface with one O(13)Sr4Co2 octahedra,  a faceface with one O(16)Sr4Co2 octahedra,  a faceface with one O(17)Sr4Co2 octahedra, and  a faceface with one O(18)Sr4Co2 octahedra. The corner-sharing octahedral tilt angles range from 13-55°. In the sixth O site, O(6) is bonded to one Sr(2), one Sr(5), one Sr(6), one Sr(7), one Sr(8), and one Co(3) atom to form distorted OSr5Co octahedra that share corners with two equivalent O(13)Sr4Co2 octahedra, corners with two equivalent O(16)Sr4Co2 octahedra, corners with two equivalent O(19)Sr4Co2 octahedra, corners with two equivalent O(20)Sr4Co2 octahedra, corners with two equivalent O(7)Sr5Co octahedra, corners with two equivalent O(8)Sr5Co octahedra,  an edgeedge with one O(7)Sr5Co octahedra,  an edgeedge with one O(8)Sr5Co octahedra,  an edgeedge with one O(10)Sr5Nb octahedra,  an edgeedge with one O(11)Sr5Nb octahedra,  an edgeedge with one O(12)Sr5Nb octahedra,  an edgeedge with one O(9)Sr5Nb octahedra, edges with two equivalent O(5)Sr5Co octahedra,  a faceface with one O(14)Sr4Co2 octahedra,  a faceface with one O(15)Sr4Co2 octahedra,  a faceface with one O(17)Sr4Co2 octahedra, and  a faceface with one O(18)Sr4Co2 octahedra. The corner-sharing octahedral tilt angles range from 13-55°. In the seventh O site, O(7) is bonded to one Sr(3), one Sr(5), one Sr(6), one Sr(7), one Sr(8), and one Co(2) atom to form distorted OSr5Co octahedra that share corners with two equivalent O(14)Sr4Co2 octahedra, corners with two equivalent O(16)Sr4Co2 octahedra, corners with two equivalent O(17)Sr4Co2 octahedra, corners with two equivalent O(18)Sr4Co2 octahedra, corners with two equivalent O(5)Sr5Co octahedra, corners with two equivalent O(6)Sr5Co octahedra,  an edgeedge with one O(5)Sr5Co octahedra,  an edgeedge with one O(6)Sr5Co octahedra,  an edgeedge with one O(10)Sr5Nb octahedra,  an edgeedge with one O(11)Sr5Nb octahedra,  an edgeedge with one O(12)Sr5Nb octahedra,  an edgeedge with one O(9)Sr5Nb octahedra, edges with two equivalent O(8)Sr5Co octahedra,  a faceface with one O(13)Sr4Co2 octahedra,  a faceface with one O(15)Sr4Co2 octahedra,  a faceface with one O(19)Sr4Co2 octahedra, and  a faceface with one O(20)Sr4Co2 octahedra. The corner-sharing octahedral tilt angles range from 13-55°. In the eighth O site, O(8) is bonded to one Sr(4), one Sr(5), one Sr(6), one Sr(7), one Sr(8), and one Co(4) atom to form distorted OSr5Co octahedra that share corners with two equivalent O(13)Sr4Co2 octahedra, corners with two equivalent O(15)Sr4Co2 octahedra, corners with two equivalent O(17)Sr4Co2 octahedra, corners with two equivalent O(18)Sr4Co2 octahedra, corners with two equivalent O(5)Sr5Co octahedra, corners with two equivalent O(6)Sr5Co octahedra,  an edgeedge with one O(5)Sr5Co octahedra,  an edgeedge with one O(6)Sr5Co octahedra,  an edgeedge with one O(10)Sr5Nb octahedra,  an edgeedge with one O(11)Sr5Nb octahedra,  an edgeedge with one O(12)Sr5Nb octahedra,  an edgeedge with one O(9)Sr5Nb octahedra, edges with two equivalent O(7)Sr5Co octahedra,  a faceface with one O(14)Sr4Co2 octahedra,  a faceface with one O(16)Sr4Co2 octahedra,  a faceface with one O(19)Sr4Co2 octahedra, and  a faceface with one O(20)Sr4Co2 octahedra. The corner-sharing octahedral tilt angles range from 13-55°. In the ninth O site, O(9) is bonded to one Sr(1), one Sr(2), one Sr(3), one Sr(4), one Sr(5), and one Nb(1) atom to form OSr5Nb octahedra that share  a cornercorner with one O(13)Sr4Co2 octahedra,  a cornercorner with one O(14)Sr4Co2 octahedra,  a cornercorner with one O(17)Sr4Co2 octahedra,  a cornercorner with one O(19)Sr4Co2 octahedra, corners with two equivalent O(11)Sr5Nb octahedra, corners with two equivalent O(12)Sr5Nb octahedra,  an edgeedge with one O(5)Sr5Co octahedra,  an edgeedge with one O(6)Sr5Co octahedra,  an edgeedge with one O(7)Sr5Co octahedra,  an edgeedge with one O(8)Sr5Co octahedra,  an edgeedge with one O(11)Sr5Nb octahedra,  an edgeedge with one O(12)Sr5Nb octahedra, and edges with two equivalent O(10)Sr5Nb octahedra. The corner-sharing octahedral tilt angles range from 3-47°. In the tenth O site, O(10) is bonded to one Sr(1), one Sr(2), one Sr(3), one Sr(4), one Sr(6), and one Nb(2) atom to form OSr5Nb octahedra that share  a cornercorner with one O(13)Sr4Co2 octahedra,  a cornercorner with one O(14)Sr4Co2 octahedra,  a cornercorner with one O(18)Sr4Co2 octahedra,  a cornercorner with one O(20)Sr4Co2 octahedra, corners with two equivalent O(11)Sr5Nb octahedra, corners with two equivalent O(12)Sr5Nb octahedra,  an edgeedge with one O(5)Sr5Co octahedra,  an edgeedge with one O(6)Sr5Co octahedra,  an edgeedge with one O(7)Sr5Co octahedra,  an edgeedge with one O(8)Sr5Co octahedra,  an edgeedge with one O(11)Sr5Nb octahedra,  an edgeedge with one O(12)Sr5Nb octahedra, and edges with two equivalent O(9)Sr5Nb octahedra. The corner-sharing octahedral tilt angles range from 3-47°. In the eleventh O site, O(11) is bonded to one Sr(1), one Sr(2), one Sr(3), one Sr(4), one Sr(7), and one Nb(3) atom to form OSr5Nb octahedra that share  a cornercorner with one O(15)Sr4Co2 octahedra,  a cornercorner with one O(16)Sr4Co2 octahedra,  a cornercorner with one O(18)Sr4Co2 octahedra,  a cornercorner with one O(19)Sr4Co2 octahedra, corners with two equivalent O(10)Sr5Nb octahedra, corners with two equivalent O(9)Sr5Nb octahedra,  an edgeedge with one O(5)Sr5Co octahedra,  an edgeedge with one O(6)Sr5Co octahedra,  an edgeedge with one O(7)Sr5Co octahedra,  an edgeedge with one O(8)Sr5Co octahedra,  an edgeedge with one O(10)Sr5Nb octahedra,  an edgeedge with one O(9)Sr5Nb octahedra, and edges with two equivalent O(12)Sr5Nb octahedra. The corner-sharing octahedral tilt angles range from 3-48°. In the twelfth O site, O(12) is bonded to one Sr(1), one Sr(2), one Sr(3), one Sr(4), one Sr(8), and one Nb(4) atom to form OSr5Nb octahedra that share  a cornercorner with one O(15)Sr4Co2 octahedra,  a cornercorner with one O(16)Sr4Co2 octahedra,  a cornercorner with one O(17)Sr4Co2 octahedra,  a cornercorner with one O(20)Sr4Co2 octahedra, corners with two equivalent O(10)Sr5Nb octahedra, corners with two equivalent O(9)Sr5Nb octahedra,  an edgeedge with one O(5)Sr5Co octahedra,  an edgeedge with one O(6)Sr5Co octahedra,  an edgeedge with one O(7)Sr5Co octahedra,  an edgeedge with one O(8)Sr5Co octahedra,  an edgeedge with one O(10)Sr5Nb octahedra,  an edgeedge with one O(9)Sr5Nb octahedra, and edges with two equivalent O(11)Sr5Nb octahedra. The corner-sharing octahedral tilt angles range from 3-48°. In the thirteenth O site, O(13) is bonded to one Sr(10), one Sr(5), one Sr(6), one Sr(9), one Co(1), and one Co(2) atom to form distorted OSr4Co2 octahedra that share  a cornercorner with one O(15)Sr4Co2 octahedra,  a cornercorner with one O(16)Sr4Co2 octahedra,  a cornercorner with one O(10)Sr5Nb octahedra,  a cornercorner with one O(9)Sr5Nb octahedra, corners with two equivalent O(6)Sr5Co octahedra, corners with two equivalent O(8)Sr5Co octahedra, edges with two equivalent O(14)Sr4Co2 octahedra,  a faceface with one O(17)Sr4Co2 octahedra,  a faceface with one O(18)Sr4Co2 octahedra,  a faceface with one O(19)Sr4Co2 octahedra,  a faceface with one O(20)Sr4Co2 octahedra,  a faceface with one O(5)Sr5Co octahedra, and  a faceface with one O(7)Sr5Co octahedra. The corner-sharing octahedral tilt angles range from 12-55°. In the fourteenth O site, O(14) is bonded to one Sr(10), one Sr(5), one Sr(6), one Sr(9), one Co(3), and one Co(4) atom to form distorted OSr4Co2 octahedra that share  a cornercorner with one O(15)Sr4Co2 octahedra,  a cornercorner with one O(16)Sr4Co2 octahedra,  a cornercorner with one O(10)Sr5Nb octahedra,  a cornercorner with one O(9)Sr5Nb octahedra, corners with two equivalent O(5)Sr5Co octahedra, corners with two equivalent O(7)Sr5Co octahedra, edges with two equivalent O(13)Sr4Co2 octahedra,  a faceface with one O(17)Sr4Co2 octahedra,  a faceface with one O(18)Sr4Co2 octahedra,  a faceface with one O(19)Sr4Co2 octahedra,  a faceface with one O(20)Sr4Co2 octahedra,  a faceface with one O(6)Sr5Co octahedra, and  a faceface with one O(8)Sr5Co octahedra. The corner-sharing octahedral tilt angles range from 12-55°. In the fifteenth O site, O(15) is bonded to one Sr(11), one Sr(12), one Sr(7), one Sr(8), one Co(2), and one Co(3) atom to form distorted OSr4Co2 octahedra that share  a cornercorner with one O(13)Sr4Co2 octahedra,  a cornercorner with one O(14)Sr4Co2 octahedra,  a cornercorner with one O(11)Sr5Nb octahedra,  a cornercorner with one O(12)Sr5Nb octahedra, corners with two equivalent O(5)Sr5Co octahedra, corners with two equivalent O(8)Sr5Co octahedra, edges with two equivalent O(16)Sr4Co2 octahedra,  a faceface with one O(17)Sr4Co2 octahedra,  a faceface with one O(18)Sr4Co2 octahedra,  a faceface with one O(19)Sr4Co2 octahedra,  a faceface with one O(20)Sr4Co2 octahedra,  a faceface with one O(6)Sr5Co octahedra, and  a faceface with one O(7)Sr5Co octahedra. The corner-sharing octahedral tilt angles range from 12-53°. In the sixteenth O site, O(16) is bonded to one Sr(11), one Sr(12), one Sr(7), one Sr(8), one Co(1), and one Co(4) atom to form distorted OSr4Co2 octahedra that share  a cornercorner with one O(13)Sr4Co2 octahedra,  a cornercorner with one O(14)Sr4Co2 octahedra,  a cornercorner with one O(11)Sr5Nb octahedra,  a cornercorner with one O(12)Sr5Nb octahedra, corners with two equivalent O(6)Sr5Co octahedra, corners with two equivalent O(7)Sr5Co octahedra, edges with two equivalent O(15)Sr4Co2 octahedra,  a faceface with one O(17)Sr4Co2 octahedra,  a faceface with one O(18)Sr4Co2 octahedra,  a faceface with one O(19)Sr4Co2 octahedra,  a faceface with one O(20)Sr4Co2 octahedra,  a faceface with one O(5)Sr5Co octahedra, and  a faceface with one O(8)Sr5Co octahedra. The corner-sharing octahedral tilt angles range from 13-55°. In the seventeenth O site, O(17) is bonded to one Sr(12), one Sr(5), one Sr(8), one Sr(9), one Co(1), and one Co(3) atom to form distorted OSr4Co2 octahedra that share  a cornercorner with one O(12)Sr5Nb octahedra,  a cornercorner with one O(9)Sr5Nb octahedra, corners with two equivalent O(18)Sr4Co2 octahedra, corners with two equivalent O(7)Sr5Co octahedra, corners with two equivalent O(8)Sr5Co octahedra,  an edgeedge with one O(19)Sr4Co2 octahedra,  an edgeedge with one O(20)Sr4Co2 octahedra,  a faceface with one O(13)Sr4Co2 octahedra,  a faceface with one O(14)Sr4Co2 octahedra,  a faceface with one O(15)Sr4Co2 octahedra,  a faceface with one O(16)Sr4Co2 octahedra,  a faceface with one O(5)Sr5Co octahedra, and  a faceface with one O(6)Sr5Co octahedra. The corner-sharing octahedral tilt angles range from 10-55°. In the eighteenth O site, O(18) is bonded to one Sr(10), one Sr(11), one Sr(6), one Sr(7), one Co(1), and one Co(3) atom to form distorted OSr4Co2 octahedra that share  a cornercorner with one O(10)Sr5Nb octahedra,  a cornercorner with one O(11)Sr5Nb octahedra, corners with two equivalent O(17)Sr4Co2 octahedra, corners with two equivalent O(7)Sr5Co octahedra, corners with two equivalent O(8)Sr5Co octahedra,  an edgeedge with one O(19)Sr4Co2 octahedra,  an edgeedge with one O(20)Sr4Co2 octahedra,  a faceface with one O(13)Sr4Co2 octahedra,  a faceface with one O(14)Sr4Co2 octahedra,  a faceface with one O(15)Sr4Co2 octahedra,  a faceface with one O(16)Sr4Co2 octahedra,  a faceface with one O(5)Sr5Co octahedra, and  a faceface with one O(6)Sr5Co octahedra. The corner-sharing octahedral tilt angles range from 10-55°. In the nineteenth O site, O(19) is bonded to one Sr(11), one Sr(5), one Sr(7), one Sr(9), one Co(2), and one Co(4) atom to form distorted OSr4Co2 octahedra that share  a cornercorner with one O(11)Sr5Nb octahedra,  a cornercorner with one O(9)Sr5Nb octahedra, corners with two equivalent O(20)Sr4Co2 octahedra, corners with two equivalent O(5)Sr5Co octahedra, corners with two equivalent O(6)Sr5Co octahedra,  an edgeedge with one O(17)Sr4Co2 octahedra,  an edgeedge with one O(18)Sr4Co2 octahedra,  a faceface with one O(13)Sr4Co2 octahedra,  a faceface with one O(14)Sr4Co2 octahedra,  a faceface with one O(15)Sr4Co2 octahedra,  a faceface with one O(16)Sr4Co2 octahedra,  a faceface with one O(7)Sr5Co octahedra, and  a faceface with one O(8)Sr5Co octahedra. The corner-sharing octahedral tilt angles range from 10-55°. In the twentieth O site, O(20) is bonded to one Sr(10), one Sr(12), one Sr(6), one Sr(8), one Co(2), and one Co(4) atom to form distorted OSr4Co2 octahedra that share  a cornercorner with one O(10)Sr5Nb octahedra,  a cornercorner with one O(12)Sr5Nb octahedra, corners with two equivalent O(19)Sr4Co2 octahedra, corners with two equivalent O(5)Sr5Co octahedra, corners with two equivalent O(6)Sr5Co octahedra,  an edgeedge with one O(17)Sr4Co2 octahedra,  an edgeedge with one O(18)Sr4Co2 octahedra,  a faceface with one O(13)Sr4Co2 octahedra,  a faceface with one O(14)Sr4Co2 octahedra,  a faceface with one O(15)Sr4Co2 octahedra,  a faceface with one O(16)Sr4Co2 octahedra,  a faceface with one O(7)Sr5Co octahedra, and  a faceface with one O(8)Sr5Co octahedra. The corner-sharing octahedral tilt angles range from 10-55°. In the twenty-first O site, O(21) is bonded in a distorted linear geometry to one Sr(1), one Sr(2), one Nb(1), and one Nb(4) atom. In the twenty-second O site, O(22) is bonded in a distorted linear geometry to one Sr(1), one Sr(2), one Nb(2), and one Nb(3) atom. In the twenty-third O site, O(23) is bonded in a distorted linear geometry to one Sr(3), one Sr(4), one Nb(1), and one Nb(3) atom. In the twenty-fourth O site, O(24) is bonded in a distorted linear geometry to one Sr(3), one Sr(4), one Nb(2), and one Nb(4) atom. In the twenty-fifth O site, O(25) is bonded in a distorted linear geometry to one Sr(1), one Sr(3), one Nb(1), and one Nb(2) atom. In the twenty-sixth O site, O(26) is bonded in a distorted linear geometry to one Sr(2), one Sr(4), one Nb(1), and one Nb(2) atom. In the twenty-seventh O site, O(27) is bonded in a distorted linear geometry to one Sr(2), one Sr(3), one Nb(3), and one Nb(4) atom. In the twenty-eighth O site, O(28) is bonded in a distorted linear geometry to one Sr(1), one Sr(4), one Nb(3), and one Nb(4) atom.
Sr3(Co0.5Nb0.5)2O7 is (La,Ba)CuO4-derived structured and crystallizes in the triclinic P1 space group. There are twelve inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 9-coordinate geometry to one O(10), one O(11), one O(12), one O(21), one O(22), one O(25), one O(28), one O(5), and one O(9) atom. The Sr(1)-O(10) bond length is 2.82 Å. The Sr(1)-O(11) bond length is 2.82 Å. The Sr(1)-O(12) bond length is 2.82 Å. The Sr(1)-O(21) bond length is 2.73 Å. The Sr(1)-O(22) bond length is 2.76 Å. The Sr(1)-O(25) bond length is 2.77 Å. The Sr(1)-O(28) bond length is 2.75 Å. The Sr(1)-O(5) bond length is 2.37 Å. The Sr(1)-O(9) bond length is 2.82 Å. In the second Sr site, Sr(2) is bonded in a 9-coordinate geometry to one O(10), one O(11), one O(12), one O(21), one O(22), one O(26), one O(27), one O(6), and one O(9) atom. The Sr(2)-O(10) bond length is 2.82 Å. The Sr(2)-O(11) bond length is 2.82 Å. The Sr(2)-O(12) bond length is 2.82 Å. The Sr(2)-O(21) bond length is 2.72 Å. The Sr(2)-O(22) bond length is 2.75 Å. The Sr(2)-O(26) bond length is 2.73 Å. The Sr(2)-O(27) bond length is 2.76 Å. The Sr(2)-O(6) bond length is 2.35 Å. The Sr(2)-O(9) bond length is 2.82 Å. In the third Sr site, Sr(3) is bonded in a 9-coordinate geometry to one O(10), one O(11), one O(12), one O(23), one O(24), one O(25), one O(27), one O(7), and one O(9) atom. The Sr(3)-O(10) bond length is 2.81 Å. The Sr(3)-O(11) bond length is 2.81 Å. The Sr(3)-O(12) bond length is 2.81 Å. The Sr(3)-O(23) bond length is 2.75 Å. The Sr(3)-O(24) bond length is 2.75 Å. The Sr(3)-O(25) bond length is 2.74 Å. The Sr(3)-O(27) bond length is 2.75 Å. The Sr(3)-O(7) bond length is 2.35 Å. The Sr(3)-O(9) bond length is 2.80 Å. In the fourth Sr site, Sr(4) is bonded in a 9-coordinate geometry to one O(10), one O(11), one O(12), one O(23), one O(24), one O(26), one O(28), one O(8), and one O(9) atom. The Sr(4)-O(10) bond length is 2.82 Å. The Sr(4)-O(11) bond length is 2.81 Å. The Sr(4)-O(12) bond length is 2.81 Å. The Sr(4)-O(23) bond length is 2.77 Å. The Sr(4)-O(24) bond length is 2.76 Å. The Sr(4)-O(26) bond length is 2.75 Å. The Sr(4)-O(28) bond length is 2.74 Å. The Sr(4)-O(8) bond length is 2.37 Å. The Sr(4)-O(9) bond length is 2.82 Å. In the fifth Sr site, Sr(5) is bonded in a 9-coordinate geometry to one O(13), one O(14), one O(17), one O(19), one O(5), one O(6), one O(7), one O(8), and one O(9) atom. The Sr(5)-O(13) bond length is 2.74 Å. The Sr(5)-O(14) bond length is 2.73 Å. The Sr(5)-O(17) bond length is 2.71 Å. The Sr(5)-O(19) bond length is 2.71 Å. The Sr(5)-O(5) bond length is 2.90 Å. The Sr(5)-O(6) bond length is 2.79 Å. The Sr(5)-O(7) bond length is 2.80 Å. The Sr(5)-O(8) bond length is 2.88 Å. The Sr(5)-O(9) bond length is 2.60 Å. In the sixth Sr site, Sr(6) is bonded in a 9-coordinate geometry to one O(10), one O(13), one O(14), one O(18), one O(20), one O(5), one O(6), one O(7), and one O(8) atom. The Sr(6)-O(10) bond length is 2.61 Å. The Sr(6)-O(13) bond length is 2.73 Å. The Sr(6)-O(14) bond length is 2.73 Å. The Sr(6)-O(18) bond length is 2.72 Å. The Sr(6)-O(20) bond length is 2.71 Å. The Sr(6)-O(5) bond length is 2.88 Å. The Sr(6)-O(6) bond length is 2.80 Å. The Sr(6)-O(7) bond length is 2.79 Å. The Sr(6)-O(8) bond length is 2.87 Å. In the seventh Sr site, Sr(7) is bonded in a 9-coordinate geometry to one O(11), one O(15), one O(16), one O(18), one O(19), one O(5), one O(6), one O(7), and one O(8) atom. The Sr(7)-O(11) bond length is 2.59 Å. The Sr(7)-O(15) bond length is 2.68 Å. The Sr(7)-O(16) bond length is 2.75 Å. The Sr(7)-O(18) bond length is 2.74 Å. The Sr(7)-O(19) bond length is 2.73 Å. The Sr(7)-O(5) bond length is 2.77 Å. The Sr(7)-O(6) bond length is 2.88 Å. The Sr(7)-O(7) bond length is 2.87 Å. The Sr(7)-O(8) bond length is 2.78 Å. In the eighth Sr site, Sr(8) is bonded in a 9-coordinate geometry to one O(12), one O(15), one O(16), one O(17), one O(20), one O(5), one O(6), one O(7), and one O(8) atom. The Sr(8)-O(12) bond length is 2.59 Å. The Sr(8)-O(15) bond length is 2.69 Å. The Sr(8)-O(16) bond length is 2.75 Å. The Sr(8)-O(17) bond length is 2.72 Å. The Sr(8)-O(20) bond length is 2.73 Å. The Sr(8)-O(5) bond length is 2.79 Å. The Sr(8)-O(6) bond length is 2.87 Å. The Sr(8)-O(7) bond length is 2.86 Å. The Sr(8)-O(8) bond length is 2.78 Å. In the ninth Sr site, Sr(9) is bonded in a 8-coordinate geometry to one O(1), one O(13), one O(14), one O(17), one O(19), one O(2), one O(3), and one O(4) atom. The Sr(9)-O(1) bond length is 2.90 Å. The Sr(9)-O(13) bond length is 2.58 Å. The Sr(9)-O(14) bond length is 2.57 Å. The Sr(9)-O(17) bond length is 2.59 Å. The Sr(9)-O(19) bond length is 2.59 Å. The Sr(9)-O(2) bond length is 2.86 Å. The Sr(9)-O(3) bond length is 2.89 Å. The Sr(9)-O(4) bond length is 2.90 Å. In the tenth Sr site, Sr(10) is bonded in a 8-coordinate geometry to one O(1), one O(13), one O(14), one O(18), one O(2), one O(20), one O(3), and one O(4) atom. The Sr(10)-O(1) bond length is 2.92 Å. The Sr(10)-O(13) bond length is 2.57 Å. The Sr(10)-O(14) bond length is 2.57 Å. The Sr(10)-O(18) bond length is 2.59 Å. The Sr(10)-O(2) bond length is 2.89 Å. The Sr(10)-O(20) bond length is 2.59 Å. The Sr(10)-O(3) bond length is 2.88 Å. The Sr(10)-O(4) bond length is 2.91 Å. In the eleventh Sr site, Sr(11) is bonded in a 8-coordinate geometry to one O(1), one O(15), one O(16), one O(18), one O(19), one O(2), one O(3), and one O(4) atom. The Sr(11)-O(1) bond length is 2.88 Å. The Sr(11)-O(15) bond length is 2.59 Å. The Sr(11)-O(16) bond length is 2.60 Å. The Sr(11)-O(18) bond length is 2.60 Å. The Sr(11)-O(19) bond length is 2.60 Å. The Sr(11)-O(2) bond length is 2.86 Å. The Sr(11)-O(3) bond length is 2.84 Å. The Sr(11)-O(4) bond length is 2.87 Å. In the twelfth Sr site, Sr(12) is bonded in a 8-coordinate geometry to one O(1), one O(15), one O(16), one O(17), one O(2), one O(20), one O(3), and one O(4) atom. The Sr(12)-O(1) bond length is 2.86 Å. The Sr(12)-O(15) bond length is 2.60 Å. The Sr(12)-O(16) bond length is 2.60 Å. The Sr(12)-O(17) bond length is 2.59 Å. The Sr(12)-O(2) bond length is 2.84 Å. The Sr(12)-O(20) bond length is 2.59 Å. The Sr(12)-O(3) bond length is 2.85 Å. The Sr(12)-O(4) bond length is 2.89 Å. There are four inequivalent Nb sites. In the first Nb site, Nb(1) is bonded to one O(1), one O(21), one O(23), one O(25), one O(26), and one O(9) atom to form NbO6 octahedra that share  a cornercorner with one Nb(3)O6 octahedra,  a cornercorner with one Nb(4)O6 octahedra,  a cornercorner with one Co(1)O6 octahedra, and corners with two equivalent Nb(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 2-9°. The Nb(1)-O(1) bond length is 1.92 Å. The Nb(1)-O(21) bond length is 1.99 Å. The Nb(1)-O(23) bond length is 1.99 Å. The Nb(1)-O(25) bond length is 1.99 Å. The Nb(1)-O(26) bond length is 1.99 Å. The Nb(1)-O(9) bond length is 2.11 Å. In the second Nb site, Nb(2) is bonded to one O(10), one O(2), one O(22), one O(24), one O(25), and one O(26) atom to form NbO6 octahedra that share  a cornercorner with one Nb(3)O6 octahedra,  a cornercorner with one Nb(4)O6 octahedra,  a cornercorner with one Co(3)O6 octahedra, and corners with two equivalent Nb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 1-7°. The Nb(2)-O(10) bond length is 2.10 Å. The Nb(2)-O(2) bond length is 1.92 Å. The Nb(2)-O(22) bond length is 2.00 Å. The Nb(2)-O(24) bond length is 1.99 Å. The Nb(2)-O(25) bond length is 1.99 Å. The Nb(2)-O(26) bond length is 1.99 Å. In the third Nb site, Nb(3) is bonded to one O(11), one O(22), one O(23), one O(27), one O(28), and one O(3) atom to form NbO6 octahedra that share  a cornercorner with one Nb(1)O6 octahedra,  a cornercorner with one Nb(2)O6 octahedra,  a cornercorner with one Co(2)O6 octahedra, and corners with two equivalent Nb(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-7°. The Nb(3)-O(11) bond length is 2.10 Å. The Nb(3)-O(22) bond length is 2.00 Å. The Nb(3)-O(23) bond length is 2.00 Å. The Nb(3)-O(27) bond length is 1.99 Å. The Nb(3)-O(28) bond length is 1.99 Å. The Nb(3)-O(3) bond length is 1.92 Å. In the fourth Nb site, Nb(4) is bonded to one O(12), one O(21), one O(24), one O(27), one O(28), and one O(4) atom to form NbO6 octahedra that share  a cornercorner with one Nb(1)O6 octahedra,  a cornercorner with one Nb(2)O6 octahedra,  a cornercorner with one Co(4)O6 octahedra, and corners with two equivalent Nb(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 2-9°. The Nb(4)-O(12) bond length is 2.11 Å. The Nb(4)-O(21) bond length is 1.99 Å. The Nb(4)-O(24) bond length is 1.99 Å. The Nb(4)-O(27) bond length is 1.99 Å. The Nb(4)-O(28) bond length is 1.99 Å. The Nb(4)-O(4) bond length is 1.92 Å. There are four inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(1), one O(13), one O(16), one O(17), one O(18), and one O(5) atom to form distorted CoO6 octahedra that share  a cornercorner with one Nb(1)O6 octahedra,  a cornercorner with one Co(2)O6 octahedra,  a cornercorner with one Co(4)O6 octahedra, and corners with two equivalent Co(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 2-13°. The Co(1)-O(1) bond length is 2.45 Å. The Co(1)-O(13) bond length is 1.88 Å. The Co(1)-O(16) bond length is 1.99 Å. The Co(1)-O(17) bond length is 2.09 Å. The Co(1)-O(18) bond length is 2.09 Å. The Co(1)-O(5) bond length is 1.98 Å. In the second Co site, Co(2) is bonded to one O(13), one O(15), one O(19), one O(20), one O(3), and one O(7) atom to form distorted CoO6 octahedra that share  a cornercorner with one Nb(3)O6 octahedra,  a cornercorner with one Co(1)O6 octahedra,  a cornercorner with one Co(3)O6 octahedra, and corners with two equivalent Co(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-13°. The Co(2)-O(13) bond length is 2.17 Å. The Co(2)-O(15) bond length is 1.97 Å. The Co(2)-O(19) bond length is 1.91 Å. The Co(2)-O(20) bond length is 1.91 Å. The Co(2)-O(3) bond length is 2.49 Å. The Co(2)-O(7) bond length is 1.97 Å. In the third Co site, Co(3) is bonded to one O(14), one O(15), one O(17), one O(18), one O(2), and one O(6) atom to form distorted CoO6 octahedra that share  a cornercorner with one Nb(2)O6 octahedra,  a cornercorner with one Co(2)O6 octahedra,  a cornercorner with one Co(4)O6 octahedra, and corners with two equivalent Co(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 1-13°. The Co(3)-O(14) bond length is 2.17 Å. The Co(3)-O(15) bond length is 1.97 Å. The Co(3)-O(17) bond length is 1.91 Å. The Co(3)-O(18) bond length is 1.91 Å. The Co(3)-O(2) bond length is 2.50 Å. The Co(3)-O(6) bond length is 1.97 Å. In the fourth Co site, Co(4) is bonded to one O(14), one O(16), one O(19), one O(20), one O(4), and one O(8) atom to form distorted CoO6 octahedra that share  a cornercorner with one Nb(4)O6 octahedra,  a cornercorner with one Co(1)O6 octahedra,  a cornercorner with one Co(3)O6 octahedra, and corners with two equivalent Co(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 2-13°. The Co(4)-O(14) bond length is 1.88 Å. The Co(4)-O(16) bond length is 1.98 Å. The Co(4)-O(19) bond length is 2.09 Å. The Co(4)-O(20) bond length is 2.09 Å. The Co(4)-O(4) bond length is 2.44 Å. The Co(4)-O(8) bond length is 1.98 Å. There are twenty-eight inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Sr(10), one Sr(11), one Sr(12), one Sr(9), one Nb(1), and one Co(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Sr(10), one Sr(11), one Sr(12), one Sr(9), one Nb(2), and one Co(3) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one Sr(10), one Sr(11), one Sr(12), one Sr(9), one Nb(3), and one Co(2) atom. In the fourth O site, O(4) is bonded in a 6-coordinate geometry to one Sr(10), one Sr(11), one Sr(12), one Sr(9), one Nb(4), and one Co(4) atom. In the fifth O site, O(5) is bonded to one Sr(1), one Sr(5), one Sr(6), one Sr(7), one Sr(8), and one Co(1) atom to form distorted OSr5Co octahedra that share corners with two equivalent O(14)Sr4Co2 octahedra, corners with two equivalent O(15)Sr4Co2 octahedra, corners with two equivalent O(19)Sr4Co2 octahedra, corners with two equivalent O(20)Sr4Co2 octahedra, corners with two equivalent O(7)Sr5Co octahedra, corners with two equivalent O(8)Sr5Co octahedra,  an edgeedge with one O(7)Sr5Co octahedra,  an edgeedge with one O(8)Sr5Co octahedra,  an edgeedge with one O(10)Sr5Nb octahedra,  an edgeedge with one O(11)Sr5Nb octahedra,  an edgeedge with one O(12)Sr5Nb octahedra,  an edgeedge with one O(9)Sr5Nb octahedra, edges with two equivalent O(6)Sr5Co octahedra,  a faceface with one O(13)Sr4Co2 octahedra,  a faceface with one O(16)Sr4Co2 octahedra,  a faceface with one O(17)Sr4Co2 octahedra, and  a faceface with one O(18)Sr4Co2 octahedra. The corner-sharing octahedral tilt angles range from 13-55°. In the sixth O site, O(6) is bonded to one Sr(2), one Sr(5), one Sr(6), one Sr(7), one Sr(8), and one Co(3) atom to form distorted OSr5Co octahedra that share corners with two equivalent O(13)Sr4Co2 octahedra, corners with two equivalent O(16)Sr4Co2 octahedra, corners with two equivalent O(19)Sr4Co2 octahedra, corners with two equivalent O(20)Sr4Co2 octahedra, corners with two equivalent O(7)Sr5Co octahedra, corners with two equivalent O(8)Sr5Co octahedra,  an edgeedge with one O(7)Sr5Co octahedra,  an edgeedge with one O(8)Sr5Co octahedra,  an edgeedge with one O(10)Sr5Nb octahedra,  an edgeedge with one O(11)Sr5Nb octahedra,  an edgeedge with one O(12)Sr5Nb octahedra,  an edgeedge with one O(9)Sr5Nb octahedra, edges with two equivalent O(5)Sr5Co octahedra,  a faceface with one O(14)Sr4Co2 octahedra,  a faceface with one O(15)Sr4Co2 octahedra,  a faceface with one O(17)Sr4Co2 octahedra, and  a faceface with one O(18)Sr4Co2 octahedra. The corner-sharing octahedral tilt angles range from 13-55°. In the seventh O site, O(7) is bonded to one Sr(3), one Sr(5), one Sr(6), one Sr(7), one Sr(8), and one Co(2) atom to form distorted OSr5Co octahedra that share corners with two equivalent O(14)Sr4Co2 octahedra, corners with two equivalent O(16)Sr4Co2 octahedra, corners with two equivalent O(17)Sr4Co2 octahedra, corners with two equivalent O(18)Sr4Co2 octahedra, corners with two equivalent O(5)Sr5Co octahedra, corners with two equivalent O(6)Sr5Co octahedra,  an edgeedge with one O(5)Sr5Co octahedra,  an edgeedge with one O(6)Sr5Co octahedra,  an edgeedge with one O(10)Sr5Nb octahedra,  an edgeedge with one O(11)Sr5Nb octahedra,  an edgeedge with one O(12)Sr5Nb octahedra,  an edgeedge with one O(9)Sr5Nb octahedra, edges with two equivalent O(8)Sr5Co octahedra,  a faceface with one O(13)Sr4Co2 octahedra,  a faceface with one O(15)Sr4Co2 octahedra,  a faceface with one O(19)Sr4Co2 octahedra, and  a faceface with one O(20)Sr4Co2 octahedra. The corner-sharing octahedral tilt angles range from 13-55°. In the eighth O site, O(8) is bonded to one Sr(4), one Sr(5), one Sr(6), one Sr(7), one Sr(8), and one Co(4) atom to form distorted OSr5Co octahedra that share corners with two equivalent O(13)Sr4Co2 octahedra, corners with two equivalent O(15)Sr4Co2 octahedra, corners with two equivalent O(17)Sr4Co2 octahedra, corners with two equivalent O(18)Sr4Co2 octahedra, corners with two equivalent O(5)Sr5Co octahedra, corners with two equivalent O(6)Sr5Co octahedra,  an edgeedge with one O(5)Sr5Co octahedra,  an edgeedge with one O(6)Sr5Co octahedra,  an edgeedge with one O(10)Sr5Nb octahedra,  an edgeedge with one O(11)Sr5Nb octahedra,  an edgeedge with one O(12)Sr5Nb octahedra,  an edgeedge with one O(9)Sr5Nb octahedra, edges with two equivalent O(7)Sr5Co octahedra,  a faceface with one O(14)Sr4Co2 octahedra,  a faceface with one O(16)Sr4Co2 octahedra,  a faceface with one O(19)Sr4Co2 octahedra, and  a faceface with one O(20)Sr4Co2 octahedra. The corner-sharing octahedral tilt angles range from 13-55°. In the ninth O site, O(9) is bonded to one Sr(1), one Sr(2), one Sr(3), one Sr(4), one Sr(5), and one Nb(1) atom to form OSr5Nb octahedra that share  a cornercorner with one O(13)Sr4Co2 octahedra,  a cornercorner with one O(14)Sr4Co2 octahedra,  a cornercorner with one O(17)Sr4Co2 octahedra,  a cornercorner with one O(19)Sr4Co2 octahedra, corners with two equivalent O(11)Sr5Nb octahedra, corners with two equivalent O(12)Sr5Nb octahedra,  an edgeedge with one O(5)Sr5Co octahedra,  an edgeedge with one O(6)Sr5Co octahedra,  an edgeedge with one O(7)Sr5Co octahedra,  an edgeedge with one O(8)Sr5Co octahedra,  an edgeedge with one O(11)Sr5Nb octahedra,  an edgeedge with one O(12)Sr5Nb octahedra, and edges with two equivalent O(10)Sr5Nb octahedra. The corner-sharing octahedral tilt angles range from 3-47°. In the tenth O site, O(10) is bonded to one Sr(1), one Sr(2), one Sr(3), one Sr(4), one Sr(6), and one Nb(2) atom to form OSr5Nb octahedra that share  a cornercorner with one O(13)Sr4Co2 octahedra,  a cornercorner with one O(14)Sr4Co2 octahedra,  a cornercorner with one O(18)Sr4Co2 octahedra,  a cornercorner with one O(20)Sr4Co2 octahedra, corners with two equivalent O(11)Sr5Nb octahedra, corners with two equivalent O(12)Sr5Nb octahedra,  an edgeedge with one O(5)Sr5Co octahedra,  an edgeedge with one O(6)Sr5Co octahedra,  an edgeedge with one O(7)Sr5Co octahedra,  an edgeedge with one O(8)Sr5Co octahedra,  an edgeedge with one O(11)Sr5Nb octahedra,  an edgeedge with one O(12)Sr5Nb octahedra, and edges with two equivalent O(9)Sr5Nb octahedra. The corner-sharing octahedral tilt angles range from 3-47°. In the eleventh O site, O(11) is bonded to one Sr(1), one Sr(2), one Sr(3), one Sr(4), one Sr(7), and one Nb(3) atom to form OSr5Nb octahedra that share  a cornercorner with one O(15)Sr4Co2 octahedra,  a cornercorner with one O(16)Sr4Co2 octahedra,  a cornercorner with one O(18)Sr4Co2 octahedra,  a cornercorner with one O(19)Sr4Co2 octahedra, corners with two equivalent O(10)Sr5Nb octahedra, corners with two equivalent O(9)Sr5Nb octahedra,  an edgeedge with one O(5)Sr5Co octahedra,  an edgeedge with one O(6)Sr5Co octahedra,  an edgeedge with one O(7)Sr5Co octahedra,  an edgeedge with one O(8)Sr5Co octahedra,  an edgeedge with one O(10)Sr5Nb octahedra,  an edgeedge with one O(9)Sr5Nb octahedra, and edges with two equivalent O(12)Sr5Nb octahedra. The corner-sharing octahedral tilt angles range from 3-48°. In the twelfth O site, O(12) is bonded to one Sr(1), one Sr(2), one Sr(3), one Sr(4), one Sr(8), and one Nb(4) atom to form OSr5Nb octahedra that share  a cornercorner with one O(15)Sr4Co2 octahedra,  a cornercorner with one O(16)Sr4Co2 octahedra,  a cornercorner with one O(17)Sr4Co2 octahedra,  a cornercorner with one O(20)Sr4Co2 octahedra, corners with two equivalent O(10)Sr5Nb octahedra, corners with two equivalent O(9)Sr5Nb octahedra,  an edgeedge with one O(5)Sr5Co octahedra,  an edgeedge with one O(6)Sr5Co octahedra,  an edgeedge with one O(7)Sr5Co octahedra,  an edgeedge with one O(8)Sr5Co octahedra,  an edgeedge with one O(10)Sr5Nb octahedra,  an edgeedge with one O(9)Sr5Nb octahedra, and edges with two equivalent O(11)Sr5Nb octahedra. The corner-sharing octahedral tilt angles range from 3-48°. In the thirteenth O site, O(13) is bonded to one Sr(10), one Sr(5), one Sr(6), one Sr(9), one Co(1), and one Co(2) atom to form distorted OSr4Co2 octahedra that share  a cornercorner with one O(15)Sr4Co2 octahedra,  a cornercorner with one O(16)Sr4Co2 octahedra,  a cornercorner with one O(10)Sr5Nb octahedra,  a cornercorner with one O(9)Sr5Nb octahedra, corners with two equivalent O(6)Sr5Co octahedra, corners with two equivalent O(8)Sr5Co octahedra, edges with two equivalent O(14)Sr4Co2 octahedra,  a faceface with one O(17)Sr4Co2 octahedra,  a faceface with one O(18)Sr4Co2 octahedra,  a faceface with one O(19)Sr4Co2 octahedra,  a faceface with one O(20)Sr4Co2 octahedra,  a faceface with one O(5)Sr5Co octahedra, and  a faceface with one O(7)Sr5Co octahedra. The corner-sharing octahedral tilt angles range from 12-55°. In the fourteenth O site, O(14) is bonded to one Sr(10), one Sr(5), one Sr(6), one Sr(9), one Co(3), and one Co(4) atom to form distorted OSr4Co2 octahedra that share  a cornercorner with one O(15)Sr4Co2 octahedra,  a cornercorner with one O(16)Sr4Co2 octahedra,  a cornercorner with one O(10)Sr5Nb octahedra,  a cornercorner with one O(9)Sr5Nb octahedra, corners with two equivalent O(5)Sr5Co octahedra, corners with two equivalent O(7)Sr5Co octahedra, edges with two equivalent O(13)Sr4Co2 octahedra,  a faceface with one O(17)Sr4Co2 octahedra,  a faceface with one O(18)Sr4Co2 octahedra,  a faceface with one O(19)Sr4Co2 octahedra,  a faceface with one O(20)Sr4Co2 octahedra,  a faceface with one O(6)Sr5Co octahedra, and  a faceface with one O(8)Sr5Co octahedra. The corner-sharing octahedral tilt angles range from 12-55°. In the fifteenth O site, O(15) is bonded to one Sr(11), one Sr(12), one Sr(7), one Sr(8), one Co(2), and one Co(3) atom to form distorted OSr4Co2 octahedra that share  a cornercorner with one O(13)Sr4Co2 octahedra,  a cornercorner with one O(14)Sr4Co2 octahedra,  a cornercorner with one O(11)Sr5Nb octahedra,  a cornercorner with one O(12)Sr5Nb octahedra, corners with two equivalent O(5)Sr5Co octahedra, corners with two equivalent O(8)Sr5Co octahedra, edges with two equivalent O(16)Sr4Co2 octahedra,  a faceface with one O(17)Sr4Co2 octahedra,  a faceface with one O(18)Sr4Co2 octahedra,  a faceface with one O(19)Sr4Co2 octahedra,  a faceface with one O(20)Sr4Co2 octahedra,  a faceface with one O(6)Sr5Co octahedra, and  a faceface with one O(7)Sr5Co octahedra. The corner-sharing octahedral tilt angles range from 12-53°. In the sixteenth O site, O(16) is bonded to one Sr(11), one Sr(12), one Sr(7), one Sr(8), one Co(1), and one Co(4) atom to form distorted OSr4Co2 octahedra that share  a cornercorner with one O(13)Sr4Co2 octahedra,  a cornercorner with one O(14)Sr4Co2 octahedra,  a cornercorner with one O(11)Sr5Nb octahedra,  a cornercorner with one O(12)Sr5Nb octahedra, corners with two equivalent O(6)Sr5Co octahedra, corners with two equivalent O(7)Sr5Co octahedra, edges with two equivalent O(15)Sr4Co2 octahedra,  a faceface with one O(17)Sr4Co2 octahedra,  a faceface with one O(18)Sr4Co2 octahedra,  a faceface with one O(19)Sr4Co2 octahedra,  a faceface with one O(20)Sr4Co2 octahedra,  a faceface with one O(5)Sr5Co octahedra, and  a faceface with one O(8)Sr5Co octahedra. The corner-sharing octahedral tilt angles range from 13-55°. In the seventeenth O site, O(17) is bonded to one Sr(12), one Sr(5), one Sr(8), one Sr(9), one Co(1), and one Co(3) atom to form distorted OSr4Co2 octahedra that share  a cornercorner with one O(12)Sr5Nb octahedra,  a cornercorner with one O(9)Sr5Nb octahedra, corners with two equivalent O(18)Sr4Co2 octahedra, corners with two equivalent O(7)Sr5Co octahedra, corners with two equivalent O(8)Sr5Co octahedra,  an edgeedge with one O(19)Sr4Co2 octahedra,  an edgeedge with one O(20)Sr4Co2 octahedra,  a faceface with one O(13)Sr4Co2 octahedra,  a faceface with one O(14)Sr4Co2 octahedra,  a faceface with one O(15)Sr4Co2 octahedra,  a faceface with one O(16)Sr4Co2 octahedra,  a faceface with one O(5)Sr5Co octahedra, and  a faceface with one O(6)Sr5Co octahedra. The corner-sharing octahedral tilt angles range from 10-55°. In the eighteenth O site, O(18) is bonded to one Sr(10), one Sr(11), one Sr(6), one Sr(7), one Co(1), and one Co(3) atom to form distorted OSr4Co2 octahedra that share  a cornercorner with one O(10)Sr5Nb octahedra,  a cornercorner with one O(11)Sr5Nb octahedra, corners with two equivalent O(17)Sr4Co2 octahedra, corners with two equivalent O(7)Sr5Co octahedra, corners with two equivalent O(8)Sr5Co octahedra,  an edgeedge with one O(19)Sr4Co2 octahedra,  an edgeedge with one O(20)Sr4Co2 octahedra,  a faceface with one O(13)Sr4Co2 octahedra,  a faceface with one O(14)Sr4Co2 octahedra,  a faceface with one O(15)Sr4Co2 octahedra,  a faceface with one O(16)Sr4Co2 octahedra,  a faceface with one O(5)Sr5Co octahedra, and  a faceface with one O(6)Sr5Co octahedra. The corner-sharing octahedral tilt angles range from 10-55°. In the nineteenth O site, O(19) is bonded to one Sr(11), one Sr(5), one Sr(7), one Sr(9), one Co(2), and one Co(4) atom to form distorted OSr4Co2 octahedra that share  a cornercorner with one O(11)Sr5Nb octahedra,  a cornercorner with one O(9)Sr5Nb octahedra, corners with two equivalent O(20)Sr4Co2 octahedra, corners with two equivalent O(5)Sr5Co octahedra, corners with two equivalent O(6)Sr5Co octahedra,  an edgeedge with one O(17)Sr4Co2 octahedra,  an edgeedge with one O(18)Sr4Co2 octahedra,  a faceface with one O(13)Sr4Co2 octahedra,  a faceface with one O(14)Sr4Co2 octahedra,  a faceface with one O(15)Sr4Co2 octahedra,  a faceface with one O(16)Sr4Co2 octahedra,  a faceface with one O(7)Sr5Co octahedra, and  a faceface with one O(8)Sr5Co octahedra. The corner-sharing octahedral tilt angles range from 10-55°. In the twentieth O site, O(20) is bonded to one Sr(10), one Sr(12), one Sr(6), one Sr(8), one Co(2), and one Co(4) atom to form distorted OSr4Co2 octahedra that share  a cornercorner with one O(10)Sr5Nb octahedra,  a cornercorner with one O(12)Sr5Nb octahedra, corners with two equivalent O(19)Sr4Co2 octahedra, corners with two equivalent O(5)Sr5Co octahedra, corners with two equivalent O(6)Sr5Co octahedra,  an edgeedge with one O(17)Sr4Co2 octahedra,  an edgeedge with one O(18)Sr4Co2 octahedra,  a faceface with one O(13)Sr4Co2 octahedra,  a faceface with one O(14)Sr4Co2 octahedra,  a faceface with one O(15)Sr4Co2 octahedra,  a faceface with one O(16)Sr4Co2 octahedra,  a faceface with one O(7)Sr5Co octahedra, and  a faceface with one O(8)Sr5Co octahedra. The corner-sharing octahedral tilt angles range from 10-55°. In the twenty-first O site, O(21) is bonded in a distorted linear geometry to one Sr(1), one Sr(2), one Nb(1), and one Nb(4) atom. In the twenty-second O site, O(22) is bonded in a distorted linear geometry to one Sr(1), one Sr(2), one Nb(2), and one Nb(3) atom. In the twenty-third O site, O(23) is bonded in a distorted linear geometry to one Sr(3), one Sr(4), one Nb(1), and one Nb(3) atom. In the twenty-fourth O site, O(24) is bonded in a distorted linear geometry to one Sr(3), one Sr(4), one Nb(2), and one Nb(4) atom. In the twenty-fifth O site, O(25) is bonded in a distorted linear geometry to one Sr(1), one Sr(3), one Nb(1), and one Nb(2) atom. In the twenty-sixth O site, O(26) is bonded in a distorted linear geometry to one Sr(2), one Sr(4), one Nb(1), and one Nb(2) atom. In the twenty-seventh O site, O(27) is bonded in a distorted linear geometry to one Sr(2), one Sr(3), one Nb(3), and one Nb(4) atom. In the twenty-eighth O site, O(28) is bonded in a distorted linear geometry to one Sr(1), one Sr(4), one Nb(3), and one Nb(4) atom.