Sr7PrFe4(MoO6)4 crystallizes in the triclinic P1 space group. There are seven inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 7-coordinate geometry to one O(10), one O(17), one O(21), one O(22), two equivalent O(13), and two equivalent O(5) atoms. In the second Sr site, Sr(2) is bonded in a 1-coordinate geometry to one O(11), one O(18), one O(22), one O(23), and two equivalent O(6) atoms. In the third Sr site, Sr(3) is bonded in a 4-coordinate geometry to one O(12), one O(19), one O(23), one O(24), and two equivalent O(7) atoms. In the fourth Sr site, Sr(4) is bonded in a 1-coordinate geometry to one O(20), one O(21), one O(24), one O(8), and one O(9) atom. In the fifth Sr site, Sr(5) is bonded in a 4-coordinate geometry to one O(10), one O(17), one O(5), one O(6), and two equivalent O(22) atoms. In the sixth Sr site, Sr(6) is bonded in a 1-coordinate geometry to one O(20), one O(5), one O(9), and two equivalent O(21) atoms. In the seventh Sr site, Sr(7) is bonded in a 4-coordinate geometry to one O(11), one O(18), one O(6), one O(7), and two equivalent O(23) atoms. Pr(1) is bonded in a 4-coordinate geometry to one O(12), one O(19), one O(24), one O(7), and one O(8) atom. There are four inequivalent Mo sites. In the first Mo site, Mo(1) is bonded to one O(1), one O(16), one O(20), one O(21), one O(8), and one O(9) atom to form distorted MoO6 octahedra that share corners with three equivalent Mo(2)O6 octahedra and corners with three equivalent Fe(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 1-24°. In the second Mo site, Mo(2) is bonded to one O(1), one O(13), one O(17), one O(21), one O(5), and one O(9) atom to form distorted MoO6 octahedra that share corners with three equivalent Mo(1)O6 octahedra and corners with three equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 3-22°. In the third Mo site, Mo(3) is bonded to one O(10), one O(14), one O(18), one O(2), one O(22), and one O(6) atom to form distorted MoO6 octahedra that share corners with three equivalent Fe(1)O6 octahedra and corners with three equivalent Fe(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 4-22°. In the fourth Mo site, Mo(4) is bonded to one O(11), one O(15), one O(19), one O(23), one O(3), and one O(7) atom to form MoO6 octahedra that share corners with three equivalent Fe(2)O6 octahedra and corners with three equivalent Fe(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 4-24°. There are four inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(10), one O(13), one O(17), one O(2), one O(22), and one O(5) atom to form distorted FeO6 octahedra that share corners with three equivalent Mo(2)O6 octahedra and corners with three equivalent Mo(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 3-22°. In the second Fe site, Fe(2) is bonded to one O(11), one O(14), one O(18), one O(23), one O(3), and one O(6) atom to form distorted FeO6 octahedra that share corners with three equivalent Mo(3)O6 octahedra and corners with three equivalent Mo(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 4-22°. In the third Fe site, Fe(3) is bonded to one O(12), one O(15), one O(19), one O(24), one O(4), and one O(7) atom to form distorted FeO6 octahedra that share corners with three equivalent Mo(4)O6 octahedra and corners with three equivalent Fe(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 3-30°. In the fourth Fe site, Fe(4) is bonded to one O(12), one O(16), one O(20), one O(24), one O(4), and one O(8) atom to form distorted FeO6 octahedra that share corners with three equivalent Mo(1)O6 octahedra and corners with three equivalent Fe(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 1-30°. There are twenty-four inequivalent O sites. In the first O site, O(1) is bonded in a distorted linear geometry to one Mo(1) and one Mo(2) atom. In the second O site, O(2) is bonded in a distorted linear geometry to one Mo(3) and one Fe(1) atom. In the third O site, O(3) is bonded in a distorted linear geometry to one Mo(4) and one Fe(2) atom. In the fourth O site, O(4) is bonded in a linear geometry to one Fe(3) and one Fe(4) atom. In the fifth O site, O(5) is bonded in a 6-coordinate geometry to one Sr(5), one Sr(6), two equivalent Sr(1), one Mo(2), and one Fe(1) atom. In the sixth O site, O(6) is bonded in a 6-coordinate geometry to one Sr(5), one Sr(7), two equivalent Sr(2), one Mo(3), and one Fe(2) atom. In the seventh O site, O(7) is bonded in a 6-coordinate geometry to one Sr(7), two equivalent Sr(3), one Pr(1), one Mo(4), and one Fe(3) atom. In the eighth O site, O(8) is bonded in a 4-coordinate geometry to one Sr(4), one Pr(1), one Mo(1), and one Fe(4) atom. In the ninth O site, O(9) is bonded in a 4-coordinate geometry to one Sr(4), one Sr(6), one Mo(1), and one Mo(2) atom. In the tenth O site, O(10) is bonded in a 4-coordinate geometry to one Sr(1), one Sr(5), one Mo(3), and one Fe(1) atom. In the eleventh O site, O(11) is bonded in a 4-coordinate geometry to one Sr(2), one Sr(7), one Mo(4), and one Fe(2) atom. In the twelfth O site, O(12) is bonded in a distorted rectangular see-saw-like geometry to one Sr(3), one Pr(1), one Fe(3), and one Fe(4) atom. In the thirteenth O site, O(13) is bonded in a distorted linear geometry to two equivalent Sr(1), one Mo(2), and one Fe(1) atom. In the fourteenth O site, O(14) is bonded in a distorted linear geometry to one Mo(3) and one Fe(2) atom. In the fifteenth O site, O(15) is bonded in a distorted linear geometry to one Mo(4) and one Fe(3) atom. In the sixteenth O site, O(16) is bonded in a distorted linear geometry to one Mo(1) and one Fe(4) atom. In the seventeenth O site, O(17) is bonded in a 4-coordinate geometry to one Sr(1), one Sr(5), one Mo(2), and one Fe(1) atom. In the eighteenth O site, O(18) is bonded in a 4-coordinate geometry to one Sr(2), one Sr(7), one Mo(3), and one Fe(2) atom. In the nineteenth O site, O(19) is bonded in a distorted rectangular see-saw-like geometry to one Sr(3), one Pr(1), one Mo(4), and one Fe(3) atom. In the twentieth O site, O(20) is bonded in a distorted rectangular see-saw-like geometry to one Sr(4), one Sr(6), one Mo(1), and one Fe(4) atom. In the twenty-first O site, O(21) is bonded in a 6-coordinate geometry to one Sr(1), one Sr(4), two equivalent Sr(6), one Mo(1), and one Mo(2) atom. In the twenty-second O site, O(22) is bonded in a 6-coordinate geometry to one Sr(1), one Sr(2), two equivalent Sr(5), one Mo(3), and one Fe(1) atom. In the twenty-third O site, O(23) is bonded in a 6-coordinate geometry to one Sr(2), one Sr(3), two equivalent Sr(7), one Mo(4), and one Fe(2) atom. In the twenty-fourth O site, O(24) is bonded in a 5-coordinate geometry to one Sr(3), one Sr(4), one Pr(1), one Fe(3), and one Fe(4) atom.
Sr7PrFe4(MoO6)4 crystallizes in the triclinic P1 space group. There are seven inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 7-coordinate geometry to one O(10), one O(17), one O(21), one O(22), two equivalent O(13), and two equivalent O(5) atoms. The Sr(1)-O(10) bond length is 2.62 Å. The Sr(1)-O(17) bond length is 2.54 Å. The Sr(1)-O(21) bond length is 2.39 Å. The Sr(1)-O(22) bond length is 2.77 Å. There is one shorter (2.77 Å) and one longer (2.85 Å) Sr(1)-O(13) bond length. There is one shorter (2.62 Å) and one longer (3.09 Å) Sr(1)-O(5) bond length. In the second Sr site, Sr(2) is bonded in a 1-coordinate geometry to one O(11), one O(18), one O(22), one O(23), and two equivalent O(6) atoms. The Sr(2)-O(11) bond length is 2.65 Å. The Sr(2)-O(18) bond length is 2.59 Å. The Sr(2)-O(22) bond length is 2.30 Å. The Sr(2)-O(23) bond length is 2.83 Å. There is one shorter (2.59 Å) and one longer (3.10 Å) Sr(2)-O(6) bond length. In the third Sr site, Sr(3) is bonded in a 4-coordinate geometry to one O(12), one O(19), one O(23), one O(24), and two equivalent O(7) atoms. The Sr(3)-O(12) bond length is 2.55 Å. The Sr(3)-O(19) bond length is 2.53 Å. The Sr(3)-O(23) bond length is 2.38 Å. The Sr(3)-O(24) bond length is 2.79 Å. There is one shorter (2.60 Å) and one longer (3.11 Å) Sr(3)-O(7) bond length. In the fourth Sr site, Sr(4) is bonded in a 1-coordinate geometry to one O(20), one O(21), one O(24), one O(8), and one O(9) atom. The Sr(4)-O(20) bond length is 2.54 Å. The Sr(4)-O(21) bond length is 2.93 Å. The Sr(4)-O(24) bond length is 2.22 Å. The Sr(4)-O(8) bond length is 2.57 Å. The Sr(4)-O(9) bond length is 2.72 Å. In the fifth Sr site, Sr(5) is bonded in a 4-coordinate geometry to one O(10), one O(17), one O(5), one O(6), and two equivalent O(22) atoms. The Sr(5)-O(10) bond length is 2.63 Å. The Sr(5)-O(17) bond length is 2.59 Å. The Sr(5)-O(5) bond length is 2.80 Å. The Sr(5)-O(6) bond length is 2.35 Å. There is one shorter (2.58 Å) and one longer (3.12 Å) Sr(5)-O(22) bond length. In the sixth Sr site, Sr(6) is bonded in a 1-coordinate geometry to one O(20), one O(5), one O(9), and two equivalent O(21) atoms. The Sr(6)-O(20) bond length is 2.69 Å. The Sr(6)-O(5) bond length is 2.28 Å. The Sr(6)-O(9) bond length is 2.52 Å. There is one shorter (2.58 Å) and one longer (3.11 Å) Sr(6)-O(21) bond length. In the seventh Sr site, Sr(7) is bonded in a 4-coordinate geometry to one O(11), one O(18), one O(6), one O(7), and two equivalent O(23) atoms. The Sr(7)-O(11) bond length is 2.58 Å. The Sr(7)-O(18) bond length is 2.60 Å. The Sr(7)-O(6) bond length is 2.77 Å. The Sr(7)-O(7) bond length is 2.37 Å. There is one shorter (2.61 Å) and one longer (3.10 Å) Sr(7)-O(23) bond length. Pr(1) is bonded in a 4-coordinate geometry to one O(12), one O(19), one O(24), one O(7), and one O(8) atom. The Pr(1)-O(12) bond length is 2.38 Å. The Pr(1)-O(19) bond length is 2.51 Å. The Pr(1)-O(24) bond length is 2.40 Å. The Pr(1)-O(7) bond length is 2.74 Å. The Pr(1)-O(8) bond length is 2.23 Å. There are four inequivalent Mo sites. In the first Mo site, Mo(1) is bonded to one O(1), one O(16), one O(20), one O(21), one O(8), and one O(9) atom to form distorted MoO6 octahedra that share corners with three equivalent Mo(2)O6 octahedra and corners with three equivalent Fe(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 1-24°. The Mo(1)-O(1) bond length is 1.81 Å. The Mo(1)-O(16) bond length is 1.78 Å. The Mo(1)-O(20) bond length is 1.92 Å. The Mo(1)-O(21) bond length is 2.35 Å. The Mo(1)-O(8) bond length is 2.33 Å. The Mo(1)-O(9) bond length is 1.93 Å. In the second Mo site, Mo(2) is bonded to one O(1), one O(13), one O(17), one O(21), one O(5), and one O(9) atom to form distorted MoO6 octahedra that share corners with three equivalent Mo(1)O6 octahedra and corners with three equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 3-22°. The Mo(2)-O(1) bond length is 1.82 Å. The Mo(2)-O(13) bond length is 1.78 Å. The Mo(2)-O(17) bond length is 2.17 Å. The Mo(2)-O(21) bond length is 2.27 Å. The Mo(2)-O(5) bond length is 2.22 Å. The Mo(2)-O(9) bond length is 2.24 Å. In the third Mo site, Mo(3) is bonded to one O(10), one O(14), one O(18), one O(2), one O(22), and one O(6) atom to form distorted MoO6 octahedra that share corners with three equivalent Fe(1)O6 octahedra and corners with three equivalent Fe(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 4-22°. The Mo(3)-O(10) bond length is 2.02 Å. The Mo(3)-O(14) bond length is 1.81 Å. The Mo(3)-O(18) bond length is 2.05 Å. The Mo(3)-O(2) bond length is 1.80 Å. The Mo(3)-O(22) bond length is 2.23 Å. The Mo(3)-O(6) bond length is 2.25 Å. In the fourth Mo site, Mo(4) is bonded to one O(11), one O(15), one O(19), one O(23), one O(3), and one O(7) atom to form MoO6 octahedra that share corners with three equivalent Fe(2)O6 octahedra and corners with three equivalent Fe(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 4-24°. The Mo(4)-O(11) bond length is 2.10 Å. The Mo(4)-O(15) bond length is 1.80 Å. The Mo(4)-O(19) bond length is 2.14 Å. The Mo(4)-O(23) bond length is 2.14 Å. The Mo(4)-O(3) bond length is 1.79 Å. The Mo(4)-O(7) bond length is 2.16 Å. There are four inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(10), one O(13), one O(17), one O(2), one O(22), and one O(5) atom to form distorted FeO6 octahedra that share corners with three equivalent Mo(2)O6 octahedra and corners with three equivalent Mo(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 3-22°. The Fe(1)-O(10) bond length is 2.11 Å. The Fe(1)-O(13) bond length is 1.82 Å. The Fe(1)-O(17) bond length is 1.94 Å. The Fe(1)-O(2) bond length is 1.78 Å. The Fe(1)-O(22) bond length is 2.33 Å. The Fe(1)-O(5) bond length is 2.34 Å. In the second Fe site, Fe(2) is bonded to one O(11), one O(14), one O(18), one O(23), one O(3), and one O(6) atom to form distorted FeO6 octahedra that share corners with three equivalent Mo(3)O6 octahedra and corners with three equivalent Mo(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 4-22°. The Fe(2)-O(11) bond length is 1.98 Å. The Fe(2)-O(14) bond length is 1.78 Å. The Fe(2)-O(18) bond length is 2.07 Å. The Fe(2)-O(23) bond length is 2.42 Å. The Fe(2)-O(3) bond length is 1.80 Å. The Fe(2)-O(6) bond length is 2.29 Å. In the third Fe site, Fe(3) is bonded to one O(12), one O(15), one O(19), one O(24), one O(4), and one O(7) atom to form distorted FeO6 octahedra that share corners with three equivalent Mo(4)O6 octahedra and corners with three equivalent Fe(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 3-30°. The Fe(3)-O(12) bond length is 1.98 Å. The Fe(3)-O(15) bond length is 1.81 Å. The Fe(3)-O(19) bond length is 2.03 Å. The Fe(3)-O(24) bond length is 2.32 Å. The Fe(3)-O(4) bond length is 1.78 Å. The Fe(3)-O(7) bond length is 2.42 Å. In the fourth Fe site, Fe(4) is bonded to one O(12), one O(16), one O(20), one O(24), one O(4), and one O(8) atom to form distorted FeO6 octahedra that share corners with three equivalent Mo(1)O6 octahedra and corners with three equivalent Fe(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 1-30°. The Fe(4)-O(12) bond length is 2.11 Å. The Fe(4)-O(16) bond length is 1.81 Å. The Fe(4)-O(20) bond length is 2.22 Å. The Fe(4)-O(24) bond length is 2.20 Å. The Fe(4)-O(4) bond length is 1.77 Å. The Fe(4)-O(8) bond length is 2.26 Å. There are twenty-four inequivalent O sites. In the first O site, O(1) is bonded in a distorted linear geometry to one Mo(1) and one Mo(2) atom. In the second O site, O(2) is bonded in a distorted linear geometry to one Mo(3) and one Fe(1) atom. In the third O site, O(3) is bonded in a distorted linear geometry to one Mo(4) and one Fe(2) atom. In the fourth O site, O(4) is bonded in a linear geometry to one Fe(3) and one Fe(4) atom. In the fifth O site, O(5) is bonded in a 6-coordinate geometry to one Sr(5), one Sr(6), two equivalent Sr(1), one Mo(2), and one Fe(1) atom. In the sixth O site, O(6) is bonded in a 6-coordinate geometry to one Sr(5), one Sr(7), two equivalent Sr(2), one Mo(3), and one Fe(2) atom. In the seventh O site, O(7) is bonded in a 6-coordinate geometry to one Sr(7), two equivalent Sr(3), one Pr(1), one Mo(4), and one Fe(3) atom. In the eighth O site, O(8) is bonded in a 4-coordinate geometry to one Sr(4), one Pr(1), one Mo(1), and one Fe(4) atom. In the ninth O site, O(9) is bonded in a 4-coordinate geometry to one Sr(4), one Sr(6), one Mo(1), and one Mo(2) atom. In the tenth O site, O(10) is bonded in a 4-coordinate geometry to one Sr(1), one Sr(5), one Mo(3), and one Fe(1) atom. In the eleventh O site, O(11) is bonded in a 4-coordinate geometry to one Sr(2), one Sr(7), one Mo(4), and one Fe(2) atom. In the twelfth O site, O(12) is bonded in a distorted rectangular see-saw-like geometry to one Sr(3), one Pr(1), one Fe(3), and one Fe(4) atom. In the thirteenth O site, O(13) is bonded in a distorted linear geometry to two equivalent Sr(1), one Mo(2), and one Fe(1) atom. In the fourteenth O site, O(14) is bonded in a distorted linear geometry to one Mo(3) and one Fe(2) atom. In the fifteenth O site, O(15) is bonded in a distorted linear geometry to one Mo(4) and one Fe(3) atom. In the sixteenth O site, O(16) is bonded in a distorted linear geometry to one Mo(1) and one Fe(4) atom. In the seventeenth O site, O(17) is bonded in a 4-coordinate geometry to one Sr(1), one Sr(5), one Mo(2), and one Fe(1) atom. In the eighteenth O site, O(18) is bonded in a 4-coordinate geometry to one Sr(2), one Sr(7), one Mo(3), and one Fe(2) atom. In the nineteenth O site, O(19) is bonded in a distorted rectangular see-saw-like geometry to one Sr(3), one Pr(1), one Mo(4), and one Fe(3) atom. In the twentieth O site, O(20) is bonded in a distorted rectangular see-saw-like geometry to one Sr(4), one Sr(6), one Mo(1), and one Fe(4) atom. In the twenty-first O site, O(21) is bonded in a 6-coordinate geometry to one Sr(1), one Sr(4), two equivalent Sr(6), one Mo(1), and one Mo(2) atom. In the twenty-second O site, O(22) is bonded in a 6-coordinate geometry to one Sr(1), one Sr(2), two equivalent Sr(5), one Mo(3), and one Fe(1) atom. In the twenty-third O site, O(23) is bonded in a 6-coordinate geometry to one Sr(2), one Sr(3), two equivalent Sr(7), one Mo(4), and one Fe(2) atom. In the twenty-fourth O site, O(24) is bonded in a 5-coordinate geometry to one Sr(3), one Sr(4), one Pr(1), one Fe(3), and one Fe(4) atom.