CoSb(PO4)2 crystallizes in the monoclinic Pm space group. There are four inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(10), one O(2), two equivalent O(18), and two equivalent O(22) atoms to form distorted CoO6 pentagonal pyramids that share corners with two equivalent Sb(1)O6 octahedra, corners with two equivalent Sb(2)O6 octahedra,  a cornercorner with one P(4)O4 tetrahedra,  a cornercorner with one P(5)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra, and  an edgeedge with one P(6)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 48-53°. In the second Co site, Co(2) is bonded to one O(11), one O(3), two equivalent O(19), and two equivalent O(23) atoms to form distorted CoO6 octahedra that share corners with two equivalent Sb(3)O6 octahedra, corners with two equivalent Sb(4)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(8)O4 tetrahedra, corners with two equivalent P(3)O4 tetrahedra, and  an edgeedge with one P(7)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 50-53°. In the third Co site, Co(3) is bonded to one O(1), one O(9), two equivalent O(17), and two equivalent O(21) atoms to form distorted CoO6 octahedra that share corners with two equivalent Sb(1)O6 octahedra, corners with two equivalent Sb(2)O6 octahedra,  a cornercorner with one P(3)O4 tetrahedra,  a cornercorner with one P(6)O4 tetrahedra, corners with two equivalent P(1)O4 tetrahedra, and  an edgeedge with one P(5)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 50-53°. In the fourth Co site, Co(4) is bonded to one O(12), one O(4), two equivalent O(20), and two equivalent O(24) atoms to form distorted CoO6 pentagonal pyramids that share corners with two equivalent Sb(3)O6 octahedra, corners with two equivalent Sb(4)O6 octahedra,  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(7)O4 tetrahedra, corners with two equivalent P(4)O4 tetrahedra, and  an edgeedge with one P(8)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 48-53°. There are four inequivalent Sb sites. In the first Sb site, Sb(1) is bonded to one O(14), one O(5), two equivalent O(18), and two equivalent O(21) atoms to form SbO6 octahedra that share corners with two equivalent Co(3)O6 octahedra, corners with two equivalent Co(1)O6 pentagonal pyramids,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(8)O4 tetrahedra, corners with two equivalent P(5)O4 tetrahedra, and  an edgeedge with one P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 53°. In the second Sb site, Sb(2) is bonded to one O(13), one O(6), two equivalent O(17), and two equivalent O(22) atoms to form SbO6 octahedra that share corners with two equivalent Co(3)O6 octahedra, corners with two equivalent Co(1)O6 pentagonal pyramids,  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(7)O4 tetrahedra, corners with two equivalent P(6)O4 tetrahedra, and  an edgeedge with one P(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 50°. In the third Sb site, Sb(3) is bonded to one O(16), one O(7), two equivalent O(20), and two equivalent O(23) atoms to form SbO6 octahedra that share corners with two equivalent Co(2)O6 octahedra, corners with two equivalent Co(4)O6 pentagonal pyramids,  a cornercorner with one P(3)O4 tetrahedra,  a cornercorner with one P(6)O4 tetrahedra, corners with two equivalent P(7)O4 tetrahedra, and  an edgeedge with one P(4)O4 tetrahedra. The corner-sharing octahedral tilt angles are 53°. In the fourth Sb site, Sb(4) is bonded to one O(15), one O(8), two equivalent O(19), and two equivalent O(24) atoms to form SbO6 octahedra that share corners with two equivalent Co(2)O6 octahedra, corners with two equivalent Co(4)O6 pentagonal pyramids,  a cornercorner with one P(4)O4 tetrahedra,  a cornercorner with one P(5)O4 tetrahedra, corners with two equivalent P(8)O4 tetrahedra, and  an edgeedge with one P(3)O4 tetrahedra. The corner-sharing octahedral tilt angles are 50°. There are eight inequivalent P sites. In the first P site, P(1) is bonded to one O(3), one O(5), and two equivalent O(17) atoms to form PO4 tetrahedra that share  a cornercorner with one Co(2)O6 octahedra,  a cornercorner with one Sb(1)O6 octahedra, corners with two equivalent Co(3)O6 octahedra, and  an edgeedge with one Sb(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 39-59°. In the second P site, P(2) is bonded to one O(4), one O(6), and two equivalent O(18) atoms to form PO4 tetrahedra that share  a cornercorner with one Sb(2)O6 octahedra,  a cornercorner with one Co(4)O6 pentagonal pyramid, corners with two equivalent Co(1)O6 pentagonal pyramids, and  an edgeedge with one Sb(1)O6 octahedra. The corner-sharing octahedral tilt angles are 42°. In the third P site, P(3) is bonded to one O(1), one O(7), and two equivalent O(19) atoms to form PO4 tetrahedra that share  a cornercorner with one Co(3)O6 octahedra,  a cornercorner with one Sb(3)O6 octahedra, corners with two equivalent Co(2)O6 octahedra, and  an edgeedge with one Sb(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 39-59°. In the fourth P site, P(4) is bonded to one O(2), one O(8), and two equivalent O(20) atoms to form PO4 tetrahedra that share  a cornercorner with one Sb(4)O6 octahedra,  a cornercorner with one Co(1)O6 pentagonal pyramid, corners with two equivalent Co(4)O6 pentagonal pyramids, and  an edgeedge with one Sb(3)O6 octahedra. The corner-sharing octahedral tilt angles are 42°. In the fifth P site, P(5) is bonded to one O(10), one O(15), and two equivalent O(21) atoms to form PO4 tetrahedra that share  a cornercorner with one Sb(4)O6 octahedra, corners with two equivalent Sb(1)O6 octahedra,  a cornercorner with one Co(1)O6 pentagonal pyramid, and  an edgeedge with one Co(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 42-61°. In the sixth P site, P(6) is bonded to one O(16), one O(9), and two equivalent O(22) atoms to form PO4 tetrahedra that share  a cornercorner with one Co(3)O6 octahedra,  a cornercorner with one Sb(3)O6 octahedra, corners with two equivalent Sb(2)O6 octahedra, and  an edgeedge with one Co(1)O6 pentagonal pyramid. The corner-sharing octahedral tilt angles range from 46-60°. In the seventh P site, P(7) is bonded to one O(12), one O(13), and two equivalent O(23) atoms to form PO4 tetrahedra that share  a cornercorner with one Sb(2)O6 octahedra, corners with two equivalent Sb(3)O6 octahedra,  a cornercorner with one Co(4)O6 pentagonal pyramid, and  an edgeedge with one Co(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 42-61°. In the eighth P site, P(8) is bonded to one O(11), one O(14), and two equivalent O(24) atoms to form PO4 tetrahedra that share  a cornercorner with one Co(2)O6 octahedra,  a cornercorner with one Sb(1)O6 octahedra, corners with two equivalent Sb(4)O6 octahedra, and  an edgeedge with one Co(4)O6 pentagonal pyramid. The corner-sharing octahedral tilt angles range from 46-61°. There are twenty-four inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one Co(3) and one P(3) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one Co(1) and one P(4) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one Co(2) and one P(1) atom. In the fourth O site, O(4) is bonded in a bent 150 degrees geometry to one Co(4) and one P(2) atom. In the fifth O site, O(5) is bonded in a distorted bent 150 degrees geometry to one Sb(1) and one P(1) atom. In the sixth O site, O(6) is bonded in a distorted bent 150 degrees geometry to one Sb(2) and one P(2) atom. In the seventh O site, O(7) is bonded in a distorted bent 150 degrees geometry to one Sb(3) and one P(3) atom. In the eighth O site, O(8) is bonded in a distorted bent 150 degrees geometry to one Sb(4) and one P(4) atom. In the ninth O site, O(9) is bonded in a distorted bent 120 degrees geometry to one Co(3) and one P(6) atom. In the tenth O site, O(10) is bonded in a distorted bent 150 degrees geometry to one Co(1) and one P(5) atom. In the eleventh O site, O(11) is bonded in a distorted bent 120 degrees geometry to one Co(2) and one P(8) atom. In the twelfth O site, O(12) is bonded in a distorted bent 150 degrees geometry to one Co(4) and one P(7) atom. In the thirteenth O site, O(13) is bonded in a distorted bent 150 degrees geometry to one Sb(2) and one P(7) atom. In the fourteenth O site, O(14) is bonded in a bent 120 degrees geometry to one Sb(1) and one P(8) atom. In the fifteenth O site, O(15) is bonded in a distorted bent 150 degrees geometry to one Sb(4) and one P(5) atom. In the sixteenth O site, O(16) is bonded in a bent 120 degrees geometry to one Sb(3) and one P(6) atom. In the seventeenth O site, O(17) is bonded in a distorted trigonal planar geometry to one Co(3), one Sb(2), and one P(1) atom. In the eighteenth O site, O(18) is bonded in a 3-coordinate geometry to one Co(1), one Sb(1), and one P(2) atom. In the nineteenth O site, O(19) is bonded in a distorted trigonal planar geometry to one Co(2), one Sb(4), and one P(3) atom. In the twentieth O site, O(20) is bonded in a 3-coordinate geometry to one Co(4), one Sb(3), and one P(4) atom. In the twenty-first O site, O(21) is bonded in a distorted trigonal planar geometry to one Co(3), one Sb(1), and one P(5) atom. In the twenty-second O site, O(22) is bonded in a 3-coordinate geometry to one Co(1), one Sb(2), and one P(6) atom. In the twenty-third O site, O(23) is bonded in a distorted trigonal planar geometry to one Co(2), one Sb(3), and one P(7) atom. In the twenty-fourth O site, O(24) is bonded in a 3-coordinate geometry to one Co(4), one Sb(4), and one P(8) atom.
CoSb(PO4)2 crystallizes in the monoclinic Pm space group. There are four inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(10), one O(2), two equivalent O(18), and two equivalent O(22) atoms to form distorted CoO6 pentagonal pyramids that share corners with two equivalent Sb(1)O6 octahedra, corners with two equivalent Sb(2)O6 octahedra,  a cornercorner with one P(4)O4 tetrahedra,  a cornercorner with one P(5)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra, and  an edgeedge with one P(6)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 48-53°. The Co(1)-O(10) bond length is 2.03 Å. The Co(1)-O(2) bond length is 1.97 Å. Both Co(1)-O(18) bond lengths are 2.06 Å. Both Co(1)-O(22) bond lengths are 2.45 Å. In the second Co site, Co(2) is bonded to one O(11), one O(3), two equivalent O(19), and two equivalent O(23) atoms to form distorted CoO6 octahedra that share corners with two equivalent Sb(3)O6 octahedra, corners with two equivalent Sb(4)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(8)O4 tetrahedra, corners with two equivalent P(3)O4 tetrahedra, and  an edgeedge with one P(7)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 50-53°. The Co(2)-O(11) bond length is 1.99 Å. The Co(2)-O(3) bond length is 2.02 Å. Both Co(2)-O(19) bond lengths are 2.27 Å. Both Co(2)-O(23) bond lengths are 2.24 Å. In the third Co site, Co(3) is bonded to one O(1), one O(9), two equivalent O(17), and two equivalent O(21) atoms to form distorted CoO6 octahedra that share corners with two equivalent Sb(1)O6 octahedra, corners with two equivalent Sb(2)O6 octahedra,  a cornercorner with one P(3)O4 tetrahedra,  a cornercorner with one P(6)O4 tetrahedra, corners with two equivalent P(1)O4 tetrahedra, and  an edgeedge with one P(5)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 50-53°. The Co(3)-O(1) bond length is 2.02 Å. The Co(3)-O(9) bond length is 1.99 Å. Both Co(3)-O(17) bond lengths are 2.27 Å. Both Co(3)-O(21) bond lengths are 2.24 Å. In the fourth Co site, Co(4) is bonded to one O(12), one O(4), two equivalent O(20), and two equivalent O(24) atoms to form distorted CoO6 pentagonal pyramids that share corners with two equivalent Sb(3)O6 octahedra, corners with two equivalent Sb(4)O6 octahedra,  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(7)O4 tetrahedra, corners with two equivalent P(4)O4 tetrahedra, and  an edgeedge with one P(8)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 48-53°. The Co(4)-O(12) bond length is 2.03 Å. The Co(4)-O(4) bond length is 1.97 Å. Both Co(4)-O(20) bond lengths are 2.05 Å. Both Co(4)-O(24) bond lengths are 2.46 Å. There are four inequivalent Sb sites. In the first Sb site, Sb(1) is bonded to one O(14), one O(5), two equivalent O(18), and two equivalent O(21) atoms to form SbO6 octahedra that share corners with two equivalent Co(3)O6 octahedra, corners with two equivalent Co(1)O6 pentagonal pyramids,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(8)O4 tetrahedra, corners with two equivalent P(5)O4 tetrahedra, and  an edgeedge with one P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 53°. The Sb(1)-O(14) bond length is 2.27 Å. The Sb(1)-O(5) bond length is 2.20 Å. Both Sb(1)-O(18) bond lengths are 2.32 Å. Both Sb(1)-O(21) bond lengths are 2.26 Å. In the second Sb site, Sb(2) is bonded to one O(13), one O(6), two equivalent O(17), and two equivalent O(22) atoms to form SbO6 octahedra that share corners with two equivalent Co(3)O6 octahedra, corners with two equivalent Co(1)O6 pentagonal pyramids,  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(7)O4 tetrahedra, corners with two equivalent P(6)O4 tetrahedra, and  an edgeedge with one P(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 50°. The Sb(2)-O(13) bond length is 2.00 Å. The Sb(2)-O(6) bond length is 1.98 Å. Both Sb(2)-O(17) bond lengths are 2.09 Å. Both Sb(2)-O(22) bond lengths are 2.10 Å. In the third Sb site, Sb(3) is bonded to one O(16), one O(7), two equivalent O(20), and two equivalent O(23) atoms to form SbO6 octahedra that share corners with two equivalent Co(2)O6 octahedra, corners with two equivalent Co(4)O6 pentagonal pyramids,  a cornercorner with one P(3)O4 tetrahedra,  a cornercorner with one P(6)O4 tetrahedra, corners with two equivalent P(7)O4 tetrahedra, and  an edgeedge with one P(4)O4 tetrahedra. The corner-sharing octahedral tilt angles are 53°. The Sb(3)-O(16) bond length is 2.27 Å. The Sb(3)-O(7) bond length is 2.20 Å. Both Sb(3)-O(20) bond lengths are 2.33 Å. Both Sb(3)-O(23) bond lengths are 2.26 Å. In the fourth Sb site, Sb(4) is bonded to one O(15), one O(8), two equivalent O(19), and two equivalent O(24) atoms to form SbO6 octahedra that share corners with two equivalent Co(2)O6 octahedra, corners with two equivalent Co(4)O6 pentagonal pyramids,  a cornercorner with one P(4)O4 tetrahedra,  a cornercorner with one P(5)O4 tetrahedra, corners with two equivalent P(8)O4 tetrahedra, and  an edgeedge with one P(3)O4 tetrahedra. The corner-sharing octahedral tilt angles are 50°. The Sb(4)-O(15) bond length is 2.00 Å. The Sb(4)-O(8) bond length is 1.98 Å. Both Sb(4)-O(19) bond lengths are 2.09 Å. Both Sb(4)-O(24) bond lengths are 2.09 Å. There are eight inequivalent P sites. In the first P site, P(1) is bonded to one O(3), one O(5), and two equivalent O(17) atoms to form PO4 tetrahedra that share  a cornercorner with one Co(2)O6 octahedra,  a cornercorner with one Sb(1)O6 octahedra, corners with two equivalent Co(3)O6 octahedra, and  an edgeedge with one Sb(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 39-59°. The P(1)-O(3) bond length is 1.51 Å. The P(1)-O(5) bond length is 1.52 Å. Both P(1)-O(17) bond lengths are 1.63 Å. In the second P site, P(2) is bonded to one O(4), one O(6), and two equivalent O(18) atoms to form PO4 tetrahedra that share  a cornercorner with one Sb(2)O6 octahedra,  a cornercorner with one Co(4)O6 pentagonal pyramid, corners with two equivalent Co(1)O6 pentagonal pyramids, and  an edgeedge with one Sb(1)O6 octahedra. The corner-sharing octahedral tilt angles are 42°. The P(2)-O(4) bond length is 1.50 Å. The P(2)-O(6) bond length is 1.59 Å. Both P(2)-O(18) bond lengths are 1.57 Å. In the third P site, P(3) is bonded to one O(1), one O(7), and two equivalent O(19) atoms to form PO4 tetrahedra that share  a cornercorner with one Co(3)O6 octahedra,  a cornercorner with one Sb(3)O6 octahedra, corners with two equivalent Co(2)O6 octahedra, and  an edgeedge with one Sb(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 39-59°. The P(3)-O(1) bond length is 1.51 Å. The P(3)-O(7) bond length is 1.52 Å. Both P(3)-O(19) bond lengths are 1.63 Å. In the fourth P site, P(4) is bonded to one O(2), one O(8), and two equivalent O(20) atoms to form PO4 tetrahedra that share  a cornercorner with one Sb(4)O6 octahedra,  a cornercorner with one Co(1)O6 pentagonal pyramid, corners with two equivalent Co(4)O6 pentagonal pyramids, and  an edgeedge with one Sb(3)O6 octahedra. The corner-sharing octahedral tilt angles are 42°. The P(4)-O(2) bond length is 1.50 Å. The P(4)-O(8) bond length is 1.59 Å. Both P(4)-O(20) bond lengths are 1.57 Å. In the fifth P site, P(5) is bonded to one O(10), one O(15), and two equivalent O(21) atoms to form PO4 tetrahedra that share  a cornercorner with one Sb(4)O6 octahedra, corners with two equivalent Sb(1)O6 octahedra,  a cornercorner with one Co(1)O6 pentagonal pyramid, and  an edgeedge with one Co(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 42-61°. The P(5)-O(10) bond length is 1.51 Å. The P(5)-O(15) bond length is 1.60 Å. Both P(5)-O(21) bond lengths are 1.56 Å. In the sixth P site, P(6) is bonded to one O(16), one O(9), and two equivalent O(22) atoms to form PO4 tetrahedra that share  a cornercorner with one Co(3)O6 octahedra,  a cornercorner with one Sb(3)O6 octahedra, corners with two equivalent Sb(2)O6 octahedra, and  an edgeedge with one Co(1)O6 pentagonal pyramid. The corner-sharing octahedral tilt angles range from 46-60°. The P(6)-O(16) bond length is 1.52 Å. The P(6)-O(9) bond length is 1.51 Å. Both P(6)-O(22) bond lengths are 1.62 Å. In the seventh P site, P(7) is bonded to one O(12), one O(13), and two equivalent O(23) atoms to form PO4 tetrahedra that share  a cornercorner with one Sb(2)O6 octahedra, corners with two equivalent Sb(3)O6 octahedra,  a cornercorner with one Co(4)O6 pentagonal pyramid, and  an edgeedge with one Co(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 42-61°. The P(7)-O(12) bond length is 1.51 Å. The P(7)-O(13) bond length is 1.60 Å. Both P(7)-O(23) bond lengths are 1.56 Å. In the eighth P site, P(8) is bonded to one O(11), one O(14), and two equivalent O(24) atoms to form PO4 tetrahedra that share  a cornercorner with one Co(2)O6 octahedra,  a cornercorner with one Sb(1)O6 octahedra, corners with two equivalent Sb(4)O6 octahedra, and  an edgeedge with one Co(4)O6 pentagonal pyramid. The corner-sharing octahedral tilt angles range from 46-61°. The P(8)-O(11) bond length is 1.51 Å. The P(8)-O(14) bond length is 1.52 Å. Both P(8)-O(24) bond lengths are 1.61 Å. There are twenty-four inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one Co(3) and one P(3) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one Co(1) and one P(4) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one Co(2) and one P(1) atom. In the fourth O site, O(4) is bonded in a bent 150 degrees geometry to one Co(4) and one P(2) atom. In the fifth O site, O(5) is bonded in a distorted bent 150 degrees geometry to one Sb(1) and one P(1) atom. In the sixth O site, O(6) is bonded in a distorted bent 150 degrees geometry to one Sb(2) and one P(2) atom. In the seventh O site, O(7) is bonded in a distorted bent 150 degrees geometry to one Sb(3) and one P(3) atom. In the eighth O site, O(8) is bonded in a distorted bent 150 degrees geometry to one Sb(4) and one P(4) atom. In the ninth O site, O(9) is bonded in a distorted bent 120 degrees geometry to one Co(3) and one P(6) atom. In the tenth O site, O(10) is bonded in a distorted bent 150 degrees geometry to one Co(1) and one P(5) atom. In the eleventh O site, O(11) is bonded in a distorted bent 120 degrees geometry to one Co(2) and one P(8) atom. In the twelfth O site, O(12) is bonded in a distorted bent 150 degrees geometry to one Co(4) and one P(7) atom. In the thirteenth O site, O(13) is bonded in a distorted bent 150 degrees geometry to one Sb(2) and one P(7) atom. In the fourteenth O site, O(14) is bonded in a bent 120 degrees geometry to one Sb(1) and one P(8) atom. In the fifteenth O site, O(15) is bonded in a distorted bent 150 degrees geometry to one Sb(4) and one P(5) atom. In the sixteenth O site, O(16) is bonded in a bent 120 degrees geometry to one Sb(3) and one P(6) atom. In the seventeenth O site, O(17) is bonded in a distorted trigonal planar geometry to one Co(3), one Sb(2), and one P(1) atom. In the eighteenth O site, O(18) is bonded in a 3-coordinate geometry to one Co(1), one Sb(1), and one P(2) atom. In the nineteenth O site, O(19) is bonded in a distorted trigonal planar geometry to one Co(2), one Sb(4), and one P(3) atom. In the twentieth O site, O(20) is bonded in a 3-coordinate geometry to one Co(4), one Sb(3), and one P(4) atom. In the twenty-first O site, O(21) is bonded in a distorted trigonal planar geometry to one Co(3), one Sb(1), and one P(5) atom. In the twenty-second O site, O(22) is bonded in a 3-coordinate geometry to one Co(1), one Sb(2), and one P(6) atom. In the twenty-third O site, O(23) is bonded in a distorted trigonal planar geometry to one Co(2), one Sb(3), and one P(7) atom. In the twenty-fourth O site, O(24) is bonded in a 3-coordinate geometry to one Co(4), one Sb(4), and one P(8) atom.