MgPr(CoO3)4 crystallizes in the orthorhombic Amm2 space group. Mg(1) is bonded in a 4-coordinate geometry to two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms. Pr(1) is bonded in a 10-coordinate geometry to two equivalent O(2), four equivalent O(1), and four equivalent O(5) atoms. Co(1) is bonded to one O(2), one O(3), one O(4), one O(5), and two equivalent O(1) atoms to form corner-sharing CoO6 octahedra. The corner-sharing octahedral tilt angles range from 16-37°. There are five inequivalent O sites. In the first O site, O(1) is bonded in a distorted T-shaped geometry to one Pr(1) and two equivalent Co(1) atoms. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Mg(1), one Pr(1), and two equivalent Co(1) atoms. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Mg(1) and two equivalent Co(1) atoms. In the fourth O site, O(4) is bonded in a distorted trigonal non-coplanar geometry to one Mg(1) and two equivalent Co(1) atoms. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to two equivalent Pr(1) and two equivalent Co(1) atoms.
MgPr(CoO3)4 crystallizes in the orthorhombic Amm2 space group. Mg(1) is bonded in a 4-coordinate geometry to two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms. Both Mg(1)-O(2) bond lengths are 2.58 Å. Both Mg(1)-O(3) bond lengths are 2.09 Å. Both Mg(1)-O(4) bond lengths are 2.05 Å. Pr(1) is bonded in a 10-coordinate geometry to two equivalent O(2), four equivalent O(1), and four equivalent O(5) atoms. Both Pr(1)-O(2) bond lengths are 2.48 Å. All Pr(1)-O(1) bond lengths are 2.46 Å. There are two shorter (2.54 Å) and two longer (2.71 Å) Pr(1)-O(5) bond lengths. Co(1) is bonded to one O(2), one O(3), one O(4), one O(5), and two equivalent O(1) atoms to form corner-sharing CoO6 octahedra. The corner-sharing octahedral tilt angles range from 16-37°. The Co(1)-O(2) bond length is 1.93 Å. The Co(1)-O(3) bond length is 1.90 Å. The Co(1)-O(4) bond length is 1.88 Å. The Co(1)-O(5) bond length is 1.99 Å. There is one shorter (1.85 Å) and one longer (1.86 Å) Co(1)-O(1) bond length. There are five inequivalent O sites. In the first O site, O(1) is bonded in a distorted T-shaped geometry to one Pr(1) and two equivalent Co(1) atoms. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Mg(1), one Pr(1), and two equivalent Co(1) atoms. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Mg(1) and two equivalent Co(1) atoms. In the fourth O site, O(4) is bonded in a distorted trigonal non-coplanar geometry to one Mg(1) and two equivalent Co(1) atoms. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to two equivalent Pr(1) and two equivalent Co(1) atoms.