MgV2(H2O3)2 crystallizes in the triclinic P1 space group. Mg(1) is bonded in a distorted square co-planar geometry to one O(1), one O(2), one O(3), and one O(4) atom. There are two inequivalent V sites. In the first V site, V(1) is bonded in a 6-coordinate geometry to one O(2), one O(4), one O(5), one O(6), and two equivalent O(1) atoms. In the second V site, V(2) is bonded to one O(2), one O(4), one O(5), one O(6), and two equivalent O(3) atoms to form distorted corner-sharing VO6 octahedra. The corner-sharing octahedral tilt angles are 24°. There are four inequivalent H sites. In the first H site, H(1) is bonded in a distorted linear geometry to one O(4) and one O(6) atom. In the second H site, H(2) is bonded in a single-bond geometry to one O(6) atom. In the third H site, H(3) is bonded in a distorted linear geometry to one O(2) and one O(5) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one O(5) atom. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted T-shaped geometry to one Mg(1) and two equivalent V(1) atoms. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Mg(1), one V(1), one V(2), and one H(3) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Mg(1) and two equivalent V(2) atoms. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one Mg(1), one V(1), one V(2), and one H(1) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one V(1), one V(2), one H(3), and one H(4) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to one V(1), one V(2), one H(1), and one H(2) atom.
MgV2(H2O3)2 crystallizes in the triclinic P1 space group. Mg(1) is bonded in a distorted square co-planar geometry to one O(1), one O(2), one O(3), and one O(4) atom. The Mg(1)-O(1) bond length is 2.07 Å. The Mg(1)-O(2) bond length is 2.03 Å. The Mg(1)-O(3) bond length is 2.07 Å. The Mg(1)-O(4) bond length is 2.03 Å. There are two inequivalent V sites. In the first V site, V(1) is bonded in a 6-coordinate geometry to one O(2), one O(4), one O(5), one O(6), and two equivalent O(1) atoms. The V(1)-O(2) bond length is 2.18 Å. The V(1)-O(4) bond length is 2.06 Å. The V(1)-O(5) bond length is 2.16 Å. The V(1)-O(6) bond length is 2.15 Å. There is one shorter (1.91 Å) and one longer (2.08 Å) V(1)-O(1) bond length. In the second V site, V(2) is bonded to one O(2), one O(4), one O(5), one O(6), and two equivalent O(3) atoms to form distorted corner-sharing VO6 octahedra. The corner-sharing octahedral tilt angles are 24°. The V(2)-O(2) bond length is 2.06 Å. The V(2)-O(4) bond length is 2.18 Å. The V(2)-O(5) bond length is 2.15 Å. The V(2)-O(6) bond length is 2.15 Å. There is one shorter (1.90 Å) and one longer (2.09 Å) V(2)-O(3) bond length. There are four inequivalent H sites. In the first H site, H(1) is bonded in a distorted linear geometry to one O(4) and one O(6) atom. The H(1)-O(4) bond length is 1.01 Å. The H(1)-O(6) bond length is 1.59 Å. In the second H site, H(2) is bonded in a single-bond geometry to one O(6) atom. The H(2)-O(6) bond length is 0.98 Å. In the third H site, H(3) is bonded in a distorted linear geometry to one O(2) and one O(5) atom. The H(3)-O(2) bond length is 1.01 Å. The H(3)-O(5) bond length is 1.60 Å. In the fourth H site, H(4) is bonded in a single-bond geometry to one O(5) atom. The H(4)-O(5) bond length is 0.99 Å. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted T-shaped geometry to one Mg(1) and two equivalent V(1) atoms. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Mg(1), one V(1), one V(2), and one H(3) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Mg(1) and two equivalent V(2) atoms. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one Mg(1), one V(1), one V(2), and one H(1) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one V(1), one V(2), one H(3), and one H(4) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to one V(1), one V(2), one H(1), and one H(2) atom.