MgV2(Ga2O5)2 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(1), one O(10), one O(4), one O(5), one O(6), and one O(9) atom to form MgO6 octahedra that share corners with two equivalent Ga(2)O6 octahedra, corners with three equivalent Ga(3)O6 octahedra,  a cornercorner with one Ga(4)O5 trigonal bipyramid,  an edgeedge with one V(1)O6 octahedra,  an edgeedge with one Ga(1)O6 octahedra,  an edgeedge with one Ga(4)O5 trigonal bipyramid, and  a faceface with one Ga(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 43-57°. There are two inequivalent V sites. In the first V site, V(1) is bonded to one O(10), one O(2), one O(3), one O(6), one O(7), and one O(8) atom to form VO6 octahedra that share corners with three equivalent Ga(2)O6 octahedra, corners with three equivalent Ga(3)O6 octahedra,  an edgeedge with one Mg(1)O6 octahedra, edges with two equivalent Ga(1)O6 octahedra, and edges with two equivalent Ga(4)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 39-51°. In the second V site, V(2) is bonded in a 5-coordinate geometry to one O(1), one O(4), one O(5), one O(8), and one O(9) atom. There are four inequivalent Ga sites. In the first Ga site, Ga(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(7), and one O(8) atom to form distorted GaO6 octahedra that share corners with two equivalent Ga(2)O6 octahedra, corners with two equivalent Ga(3)O6 octahedra,  an edgeedge with one Mg(1)O6 octahedra, edges with two equivalent V(1)O6 octahedra,  an edgeedge with one Ga(4)O5 trigonal bipyramid, and  a faceface with one Ga(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 40-58°. In the second Ga site, Ga(2) is bonded to one O(1), one O(10), one O(2), one O(5), one O(6), and one O(9) atom to form distorted GaO6 octahedra that share corners with two equivalent Mg(1)O6 octahedra, corners with two equivalent Ga(1)O6 octahedra, corners with three equivalent V(1)O6 octahedra, corners with two equivalent Ga(4)O5 trigonal bipyramids,  an edgeedge with one Ga(3)O6 octahedra,  an edgeedge with one Ga(4)O5 trigonal bipyramid, and  a faceface with one Mg(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 40-57°. In the third Ga site, Ga(3) is bonded to one O(1), one O(3), one O(4), one O(7), one O(8), and one O(9) atom to form distorted GaO6 octahedra that share corners with two equivalent Ga(1)O6 octahedra, corners with three equivalent Mg(1)O6 octahedra, corners with three equivalent V(1)O6 octahedra,  a cornercorner with one Ga(4)O5 trigonal bipyramid,  an edgeedge with one Ga(2)O6 octahedra, and  a faceface with one Ga(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 39-58°. In the fourth Ga site, Ga(4) is bonded to one O(10), one O(2), one O(5), one O(6), and one O(7) atom to form distorted GaO5 trigonal bipyramids that share  a cornercorner with one Mg(1)O6 octahedra,  a cornercorner with one Ga(3)O6 octahedra, corners with two equivalent Ga(2)O6 octahedra,  an edgeedge with one Mg(1)O6 octahedra,  an edgeedge with one Ga(1)O6 octahedra,  an edgeedge with one Ga(2)O6 octahedra, and edges with two equivalent V(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 51-73°. There are ten inequivalent O sites. In the first O site, O(1) is bonded to one Mg(1), one V(2), one Ga(1), one Ga(2), and one Ga(3) atom to form distorted OMgVGa3 trigonal bipyramids that share  a cornercorner with one O(5)MgVGa2 trigonal pyramid, corners with two equivalent O(10)MgVGa2 trigonal pyramids, corners with two equivalent O(9)MgVGa2 trigonal pyramids, corners with two equivalent O(2)VGa3 trigonal pyramids,  an edgeedge with one O(5)MgVGa2 trigonal pyramid,  an edgeedge with one O(6)MgVGa2 trigonal pyramid,  an edgeedge with one O(9)MgVGa2 trigonal pyramid,  an edgeedge with one O(7)VGa3 trigonal pyramid, and edges with two equivalent O(4)MgVGa2 trigonal pyramids. In the second O site, O(2) is bonded to one V(1), one Ga(1), one Ga(2), and one Ga(4) atom to form OVGa3 trigonal pyramids that share corners with two equivalent O(1)MgVGa3 trigonal bipyramids,  a cornercorner with one O(10)MgVGa2 trigonal pyramid,  a cornercorner with one O(4)MgVGa2 trigonal pyramid,  a cornercorner with one O(6)MgVGa2 trigonal pyramid,  a cornercorner with one O(9)MgVGa2 trigonal pyramid,  a cornercorner with one O(7)VGa3 trigonal pyramid, corners with two equivalent O(5)MgVGa2 trigonal pyramids,  an edgeedge with one O(10)MgVGa2 trigonal pyramid,  an edgeedge with one O(6)MgVGa2 trigonal pyramid, and  an edgeedge with one O(7)VGa3 trigonal pyramid. In the third O site, O(3) is bonded in a trigonal planar geometry to one V(1), one Ga(1), and one Ga(3) atom. In the fourth O site, O(4) is bonded to one Mg(1), one V(2), one Ga(1), and one Ga(3) atom to form OMgVGa2 trigonal pyramids that share  a cornercorner with one O(10)MgVGa2 trigonal pyramid,  a cornercorner with one O(6)MgVGa2 trigonal pyramid,  a cornercorner with one O(9)MgVGa2 trigonal pyramid,  a cornercorner with one O(2)VGa3 trigonal pyramid, corners with two equivalent O(5)MgVGa2 trigonal pyramids, corners with two equivalent O(7)VGa3 trigonal pyramids, edges with two equivalent O(1)MgVGa3 trigonal bipyramids, and  an edgeedge with one O(9)MgVGa2 trigonal pyramid. In the fifth O site, O(5) is bonded to one Mg(1), one V(2), one Ga(2), and one Ga(4) atom to form distorted OMgVGa2 trigonal pyramids that share  a cornercorner with one O(1)MgVGa3 trigonal bipyramid,  a cornercorner with one O(10)MgVGa2 trigonal pyramid,  a cornercorner with one O(6)MgVGa2 trigonal pyramid,  a cornercorner with one O(9)MgVGa2 trigonal pyramid,  a cornercorner with one O(7)VGa3 trigonal pyramid, corners with two equivalent O(4)MgVGa2 trigonal pyramids, corners with two equivalent O(2)VGa3 trigonal pyramids,  an edgeedge with one O(1)MgVGa3 trigonal bipyramid,  an edgeedge with one O(10)MgVGa2 trigonal pyramid,  an edgeedge with one O(6)MgVGa2 trigonal pyramid, and  an edgeedge with one O(9)MgVGa2 trigonal pyramid. In the sixth O site, O(6) is bonded to one Mg(1), one V(1), one Ga(2), and one Ga(4) atom to form OMgVGa2 trigonal pyramids that share  a cornercorner with one O(4)MgVGa2 trigonal pyramid,  a cornercorner with one O(5)MgVGa2 trigonal pyramid,  a cornercorner with one O(2)VGa3 trigonal pyramid, corners with two equivalent O(10)MgVGa2 trigonal pyramids, corners with two equivalent O(9)MgVGa2 trigonal pyramids, corners with two equivalent O(7)VGa3 trigonal pyramids,  an edgeedge with one O(1)MgVGa3 trigonal bipyramid,  an edgeedge with one O(10)MgVGa2 trigonal pyramid,  an edgeedge with one O(5)MgVGa2 trigonal pyramid, and  an edgeedge with one O(2)VGa3 trigonal pyramid. In the seventh O site, O(7) is bonded to one V(1), one Ga(1), one Ga(3), and one Ga(4) atom to form OVGa3 trigonal pyramids that share  a cornercorner with one O(5)MgVGa2 trigonal pyramid,  a cornercorner with one O(9)MgVGa2 trigonal pyramid,  a cornercorner with one O(2)VGa3 trigonal pyramid, corners with two equivalent O(4)MgVGa2 trigonal pyramids, corners with two equivalent O(6)MgVGa2 trigonal pyramids,  an edgeedge with one O(1)MgVGa3 trigonal bipyramid,  an edgeedge with one O(10)MgVGa2 trigonal pyramid, and  an edgeedge with one O(2)VGa3 trigonal pyramid. In the eighth O site, O(8) is bonded in a distorted see-saw-like geometry to one V(1), one V(2), one Ga(1), and one Ga(3) atom. In the ninth O site, O(9) is bonded to one Mg(1), one V(2), one Ga(2), and one Ga(3) atom to form OMgVGa2 trigonal pyramids that share corners with two equivalent O(1)MgVGa3 trigonal bipyramids,  a cornercorner with one O(4)MgVGa2 trigonal pyramid,  a cornercorner with one O(5)MgVGa2 trigonal pyramid,  a cornercorner with one O(2)VGa3 trigonal pyramid,  a cornercorner with one O(7)VGa3 trigonal pyramid, corners with two equivalent O(10)MgVGa2 trigonal pyramids, corners with two equivalent O(6)MgVGa2 trigonal pyramids,  an edgeedge with one O(1)MgVGa3 trigonal bipyramid,  an edgeedge with one O(4)MgVGa2 trigonal pyramid, and  an edgeedge with one O(5)MgVGa2 trigonal pyramid. In the tenth O site, O(10) is bonded to one Mg(1), one V(1), one Ga(2), and one Ga(4) atom to form distorted OMgVGa2 trigonal pyramids that share corners with two equivalent O(1)MgVGa3 trigonal bipyramids,  a cornercorner with one O(4)MgVGa2 trigonal pyramid,  a cornercorner with one O(5)MgVGa2 trigonal pyramid,  a cornercorner with one O(2)VGa3 trigonal pyramid, corners with two equivalent O(6)MgVGa2 trigonal pyramids, corners with two equivalent O(9)MgVGa2 trigonal pyramids,  an edgeedge with one O(5)MgVGa2 trigonal pyramid,  an edgeedge with one O(6)MgVGa2 trigonal pyramid,  an edgeedge with one O(2)VGa3 trigonal pyramid, and  an edgeedge with one O(7)VGa3 trigonal pyramid.
MgV2(Ga2O5)2 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(1), one O(10), one O(4), one O(5), one O(6), and one O(9) atom to form MgO6 octahedra that share corners with two equivalent Ga(2)O6 octahedra, corners with three equivalent Ga(3)O6 octahedra,  a cornercorner with one Ga(4)O5 trigonal bipyramid,  an edgeedge with one V(1)O6 octahedra,  an edgeedge with one Ga(1)O6 octahedra,  an edgeedge with one Ga(4)O5 trigonal bipyramid, and  a faceface with one Ga(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 43-57°. The Mg(1)-O(1) bond length is 2.07 Å. The Mg(1)-O(10) bond length is 2.06 Å. The Mg(1)-O(4) bond length is 2.03 Å. The Mg(1)-O(5) bond length is 2.17 Å. The Mg(1)-O(6) bond length is 2.04 Å. The Mg(1)-O(9) bond length is 2.15 Å. There are two inequivalent V sites. In the first V site, V(1) is bonded to one O(10), one O(2), one O(3), one O(6), one O(7), and one O(8) atom to form VO6 octahedra that share corners with three equivalent Ga(2)O6 octahedra, corners with three equivalent Ga(3)O6 octahedra,  an edgeedge with one Mg(1)O6 octahedra, edges with two equivalent Ga(1)O6 octahedra, and edges with two equivalent Ga(4)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 39-51°. The V(1)-O(10) bond length is 2.13 Å. The V(1)-O(2) bond length is 2.04 Å. The V(1)-O(3) bond length is 1.97 Å. The V(1)-O(6) bond length is 2.13 Å. The V(1)-O(7) bond length is 2.07 Å. The V(1)-O(8) bond length is 2.05 Å. In the second V site, V(2) is bonded in a 5-coordinate geometry to one O(1), one O(4), one O(5), one O(8), and one O(9) atom. The V(2)-O(1) bond length is 2.02 Å. The V(2)-O(4) bond length is 2.05 Å. The V(2)-O(5) bond length is 1.97 Å. The V(2)-O(8) bond length is 1.95 Å. The V(2)-O(9) bond length is 2.12 Å. There are four inequivalent Ga sites. In the first Ga site, Ga(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(7), and one O(8) atom to form distorted GaO6 octahedra that share corners with two equivalent Ga(2)O6 octahedra, corners with two equivalent Ga(3)O6 octahedra,  an edgeedge with one Mg(1)O6 octahedra, edges with two equivalent V(1)O6 octahedra,  an edgeedge with one Ga(4)O5 trigonal bipyramid, and  a faceface with one Ga(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 40-58°. The Ga(1)-O(1) bond length is 2.14 Å. The Ga(1)-O(2) bond length is 1.98 Å. The Ga(1)-O(3) bond length is 1.91 Å. The Ga(1)-O(4) bond length is 1.97 Å. The Ga(1)-O(7) bond length is 2.18 Å. The Ga(1)-O(8) bond length is 2.06 Å. In the second Ga site, Ga(2) is bonded to one O(1), one O(10), one O(2), one O(5), one O(6), and one O(9) atom to form distorted GaO6 octahedra that share corners with two equivalent Mg(1)O6 octahedra, corners with two equivalent Ga(1)O6 octahedra, corners with three equivalent V(1)O6 octahedra, corners with two equivalent Ga(4)O5 trigonal bipyramids,  an edgeedge with one Ga(3)O6 octahedra,  an edgeedge with one Ga(4)O5 trigonal bipyramid, and  a faceface with one Mg(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 40-57°. The Ga(2)-O(1) bond length is 2.43 Å. The Ga(2)-O(10) bond length is 1.97 Å. The Ga(2)-O(2) bond length is 1.92 Å. The Ga(2)-O(5) bond length is 2.06 Å. The Ga(2)-O(6) bond length is 2.01 Å. The Ga(2)-O(9) bond length is 2.01 Å. In the third Ga site, Ga(3) is bonded to one O(1), one O(3), one O(4), one O(7), one O(8), and one O(9) atom to form distorted GaO6 octahedra that share corners with two equivalent Ga(1)O6 octahedra, corners with three equivalent Mg(1)O6 octahedra, corners with three equivalent V(1)O6 octahedra,  a cornercorner with one Ga(4)O5 trigonal bipyramid,  an edgeedge with one Ga(2)O6 octahedra, and  a faceface with one Ga(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 39-58°. The Ga(3)-O(1) bond length is 2.18 Å. The Ga(3)-O(3) bond length is 1.90 Å. The Ga(3)-O(4) bond length is 1.98 Å. The Ga(3)-O(7) bond length is 2.03 Å. The Ga(3)-O(8) bond length is 2.18 Å. The Ga(3)-O(9) bond length is 1.99 Å. In the fourth Ga site, Ga(4) is bonded to one O(10), one O(2), one O(5), one O(6), and one O(7) atom to form distorted GaO5 trigonal bipyramids that share  a cornercorner with one Mg(1)O6 octahedra,  a cornercorner with one Ga(3)O6 octahedra, corners with two equivalent Ga(2)O6 octahedra,  an edgeedge with one Mg(1)O6 octahedra,  an edgeedge with one Ga(1)O6 octahedra,  an edgeedge with one Ga(2)O6 octahedra, and edges with two equivalent V(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 51-73°. The Ga(4)-O(10) bond length is 2.13 Å. The Ga(4)-O(2) bond length is 2.18 Å. The Ga(4)-O(5) bond length is 1.88 Å. The Ga(4)-O(6) bond length is 1.90 Å. The Ga(4)-O(7) bond length is 1.87 Å. There are ten inequivalent O sites. In the first O site, O(1) is bonded to one Mg(1), one V(2), one Ga(1), one Ga(2), and one Ga(3) atom to form distorted OMgVGa3 trigonal bipyramids that share  a cornercorner with one O(5)MgVGa2 trigonal pyramid, corners with two equivalent O(10)MgVGa2 trigonal pyramids, corners with two equivalent O(9)MgVGa2 trigonal pyramids, corners with two equivalent O(2)VGa3 trigonal pyramids,  an edgeedge with one O(5)MgVGa2 trigonal pyramid,  an edgeedge with one O(6)MgVGa2 trigonal pyramid,  an edgeedge with one O(9)MgVGa2 trigonal pyramid,  an edgeedge with one O(7)VGa3 trigonal pyramid, and edges with two equivalent O(4)MgVGa2 trigonal pyramids. In the second O site, O(2) is bonded to one V(1), one Ga(1), one Ga(2), and one Ga(4) atom to form OVGa3 trigonal pyramids that share corners with two equivalent O(1)MgVGa3 trigonal bipyramids,  a cornercorner with one O(10)MgVGa2 trigonal pyramid,  a cornercorner with one O(4)MgVGa2 trigonal pyramid,  a cornercorner with one O(6)MgVGa2 trigonal pyramid,  a cornercorner with one O(9)MgVGa2 trigonal pyramid,  a cornercorner with one O(7)VGa3 trigonal pyramid, corners with two equivalent O(5)MgVGa2 trigonal pyramids,  an edgeedge with one O(10)MgVGa2 trigonal pyramid,  an edgeedge with one O(6)MgVGa2 trigonal pyramid, and  an edgeedge with one O(7)VGa3 trigonal pyramid. In the third O site, O(3) is bonded in a trigonal planar geometry to one V(1), one Ga(1), and one Ga(3) atom. In the fourth O site, O(4) is bonded to one Mg(1), one V(2), one Ga(1), and one Ga(3) atom to form OMgVGa2 trigonal pyramids that share  a cornercorner with one O(10)MgVGa2 trigonal pyramid,  a cornercorner with one O(6)MgVGa2 trigonal pyramid,  a cornercorner with one O(9)MgVGa2 trigonal pyramid,  a cornercorner with one O(2)VGa3 trigonal pyramid, corners with two equivalent O(5)MgVGa2 trigonal pyramids, corners with two equivalent O(7)VGa3 trigonal pyramids, edges with two equivalent O(1)MgVGa3 trigonal bipyramids, and  an edgeedge with one O(9)MgVGa2 trigonal pyramid. In the fifth O site, O(5) is bonded to one Mg(1), one V(2), one Ga(2), and one Ga(4) atom to form distorted OMgVGa2 trigonal pyramids that share  a cornercorner with one O(1)MgVGa3 trigonal bipyramid,  a cornercorner with one O(10)MgVGa2 trigonal pyramid,  a cornercorner with one O(6)MgVGa2 trigonal pyramid,  a cornercorner with one O(9)MgVGa2 trigonal pyramid,  a cornercorner with one O(7)VGa3 trigonal pyramid, corners with two equivalent O(4)MgVGa2 trigonal pyramids, corners with two equivalent O(2)VGa3 trigonal pyramids,  an edgeedge with one O(1)MgVGa3 trigonal bipyramid,  an edgeedge with one O(10)MgVGa2 trigonal pyramid,  an edgeedge with one O(6)MgVGa2 trigonal pyramid, and  an edgeedge with one O(9)MgVGa2 trigonal pyramid. In the sixth O site, O(6) is bonded to one Mg(1), one V(1), one Ga(2), and one Ga(4) atom to form OMgVGa2 trigonal pyramids that share  a cornercorner with one O(4)MgVGa2 trigonal pyramid,  a cornercorner with one O(5)MgVGa2 trigonal pyramid,  a cornercorner with one O(2)VGa3 trigonal pyramid, corners with two equivalent O(10)MgVGa2 trigonal pyramids, corners with two equivalent O(9)MgVGa2 trigonal pyramids, corners with two equivalent O(7)VGa3 trigonal pyramids,  an edgeedge with one O(1)MgVGa3 trigonal bipyramid,  an edgeedge with one O(10)MgVGa2 trigonal pyramid,  an edgeedge with one O(5)MgVGa2 trigonal pyramid, and  an edgeedge with one O(2)VGa3 trigonal pyramid. In the seventh O site, O(7) is bonded to one V(1), one Ga(1), one Ga(3), and one Ga(4) atom to form OVGa3 trigonal pyramids that share  a cornercorner with one O(5)MgVGa2 trigonal pyramid,  a cornercorner with one O(9)MgVGa2 trigonal pyramid,  a cornercorner with one O(2)VGa3 trigonal pyramid, corners with two equivalent O(4)MgVGa2 trigonal pyramids, corners with two equivalent O(6)MgVGa2 trigonal pyramids,  an edgeedge with one O(1)MgVGa3 trigonal bipyramid,  an edgeedge with one O(10)MgVGa2 trigonal pyramid, and  an edgeedge with one O(2)VGa3 trigonal pyramid. In the eighth O site, O(8) is bonded in a distorted see-saw-like geometry to one V(1), one V(2), one Ga(1), and one Ga(3) atom. In the ninth O site, O(9) is bonded to one Mg(1), one V(2), one Ga(2), and one Ga(3) atom to form OMgVGa2 trigonal pyramids that share corners with two equivalent O(1)MgVGa3 trigonal bipyramids,  a cornercorner with one O(4)MgVGa2 trigonal pyramid,  a cornercorner with one O(5)MgVGa2 trigonal pyramid,  a cornercorner with one O(2)VGa3 trigonal pyramid,  a cornercorner with one O(7)VGa3 trigonal pyramid, corners with two equivalent O(10)MgVGa2 trigonal pyramids, corners with two equivalent O(6)MgVGa2 trigonal pyramids,  an edgeedge with one O(1)MgVGa3 trigonal bipyramid,  an edgeedge with one O(4)MgVGa2 trigonal pyramid, and  an edgeedge with one O(5)MgVGa2 trigonal pyramid. In the tenth O site, O(10) is bonded to one Mg(1), one V(1), one Ga(2), and one Ga(4) atom to form distorted OMgVGa2 trigonal pyramids that share corners with two equivalent O(1)MgVGa3 trigonal bipyramids,  a cornercorner with one O(4)MgVGa2 trigonal pyramid,  a cornercorner with one O(5)MgVGa2 trigonal pyramid,  a cornercorner with one O(2)VGa3 trigonal pyramid, corners with two equivalent O(6)MgVGa2 trigonal pyramids, corners with two equivalent O(9)MgVGa2 trigonal pyramids,  an edgeedge with one O(5)MgVGa2 trigonal pyramid,  an edgeedge with one O(6)MgVGa2 trigonal pyramid,  an edgeedge with one O(2)VGa3 trigonal pyramid, and  an edgeedge with one O(7)VGa3 trigonal pyramid.