MgPr(MoO3)2 crystallizes in the monoclinic Pc space group. Mg(1) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom. Pr(1) is bonded in a 8-coordinate geometry to one O(1), one O(2), one O(3), one O(6), two equivalent O(4), and two equivalent O(5) atoms. There are two inequivalent Mo sites. In the first Mo site, Mo(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom to form corner-sharing MoO6 octahedra. The corner-sharing octahedral tilt angles range from 36-45°. In the second Mo site, Mo(2) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom to form corner-sharing MoO6 octahedra. The corner-sharing octahedral tilt angles range from 36-45°. There are six inequivalent O sites. In the first O site, O(1) is bonded to one Mg(1), one Pr(1), one Mo(1), and one Mo(2) atom to form a mixture of distorted edge and corner-sharing OPrMgMo2 trigonal pyramids. In the second O site, O(2) is bonded to one Mg(1), one Pr(1), one Mo(1), and one Mo(2) atom to form a mixture of distorted edge and corner-sharing OPrMgMo2 trigonal pyramids. In the third O site, O(3) is bonded to one Mg(1), one Pr(1), one Mo(1), and one Mo(2) atom to form a mixture of distorted edge and corner-sharing OPrMgMo2 trigonal pyramids. In the fourth O site, O(4) is bonded in a 5-coordinate geometry to one Mg(1), two equivalent Pr(1), one Mo(1), and one Mo(2) atom. In the fifth O site, O(5) is bonded in a 5-coordinate geometry to one Mg(1), two equivalent Pr(1), one Mo(1), and one Mo(2) atom. In the sixth O site, O(6) is bonded to one Mg(1), one Pr(1), one Mo(1), and one Mo(2) atom to form distorted corner-sharing OPrMgMo2 trigonal pyramids.
MgPr(MoO3)2 crystallizes in the monoclinic Pc space group. Mg(1) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom. The Mg(1)-O(1) bond length is 2.22 Å. The Mg(1)-O(2) bond length is 2.52 Å. The Mg(1)-O(3) bond length is 2.55 Å. The Mg(1)-O(4) bond length is 2.17 Å. The Mg(1)-O(5) bond length is 2.20 Å. The Mg(1)-O(6) bond length is 2.10 Å. Pr(1) is bonded in a 8-coordinate geometry to one O(1), one O(2), one O(3), one O(6), two equivalent O(4), and two equivalent O(5) atoms. The Pr(1)-O(1) bond length is 2.33 Å. The Pr(1)-O(2) bond length is 2.37 Å. The Pr(1)-O(3) bond length is 2.35 Å. The Pr(1)-O(6) bond length is 2.41 Å. There is one shorter (2.67 Å) and one longer (2.91 Å) Pr(1)-O(4) bond length. There is one shorter (2.71 Å) and one longer (2.84 Å) Pr(1)-O(5) bond length. There are two inequivalent Mo sites. In the first Mo site, Mo(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom to form corner-sharing MoO6 octahedra. The corner-sharing octahedral tilt angles range from 36-45°. The Mo(1)-O(1) bond length is 2.17 Å. The Mo(1)-O(2) bond length is 2.11 Å. The Mo(1)-O(3) bond length is 2.11 Å. The Mo(1)-O(4) bond length is 2.18 Å. The Mo(1)-O(5) bond length is 2.19 Å. The Mo(1)-O(6) bond length is 2.21 Å. In the second Mo site, Mo(2) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom to form corner-sharing MoO6 octahedra. The corner-sharing octahedral tilt angles range from 36-45°. The Mo(2)-O(1) bond length is 2.14 Å. The Mo(2)-O(2) bond length is 2.00 Å. The Mo(2)-O(3) bond length is 2.01 Å. The Mo(2)-O(4) bond length is 2.10 Å. The Mo(2)-O(5) bond length is 2.08 Å. The Mo(2)-O(6) bond length is 2.17 Å. There are six inequivalent O sites. In the first O site, O(1) is bonded to one Mg(1), one Pr(1), one Mo(1), and one Mo(2) atom to form a mixture of distorted edge and corner-sharing OPrMgMo2 trigonal pyramids. In the second O site, O(2) is bonded to one Mg(1), one Pr(1), one Mo(1), and one Mo(2) atom to form a mixture of distorted edge and corner-sharing OPrMgMo2 trigonal pyramids. In the third O site, O(3) is bonded to one Mg(1), one Pr(1), one Mo(1), and one Mo(2) atom to form a mixture of distorted edge and corner-sharing OPrMgMo2 trigonal pyramids. In the fourth O site, O(4) is bonded in a 5-coordinate geometry to one Mg(1), two equivalent Pr(1), one Mo(1), and one Mo(2) atom. In the fifth O site, O(5) is bonded in a 5-coordinate geometry to one Mg(1), two equivalent Pr(1), one Mo(1), and one Mo(2) atom. In the sixth O site, O(6) is bonded to one Mg(1), one Pr(1), one Mo(1), and one Mo(2) atom to form distorted corner-sharing OPrMgMo2 trigonal pyramids.