YCr(WO4)2 crystallizes in the triclinic P1 space group. Y(1) is bonded to one O(1), one O(2), one O(4), one O(5), one O(6), and one O(8) atom to form distorted YO6 octahedra that share corners with four equivalent W(1)O6 octahedra and corners with four equivalent W(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 42-62°. There are two inequivalent W sites. In the first W site, W(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 WO6 octahedra that share corners with four equivalent Y(1)O6 octahedra and edges with two equivalent W(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 42-60°. In the second W site, W(2) is bonded to one O(3), one O(4), one O(5), one O(6), one O(7), and one O(8) atom to form distorted WO6 octahedra that share corners with four equivalent Y(1)O6 octahedra and edges with two equivalent W(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 47-62°. Cr(1) is bonded in a distorted square co-planar geometry to one O(2), one O(3), one O(5), and one O(7) atom. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Y(1) and one W(1) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to one Y(1), one W(1), and one Cr(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one W(1), one W(2), and one Cr(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Y(1), one W(1), and one W(2) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Y(1), one W(2), and one Cr(1) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one Y(1) and one W(2) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one W(1), one W(2), and one Cr(1) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one Y(1), one W(1), and one W(2) atom.
YCr(WO4)2 crystallizes in the triclinic P1 space group. Y(1) is bonded to one O(1), one O(2), one O(4), one O(5), one O(6), and one O(8) atom to form distorted YO6 octahedra that share corners with four equivalent W(1)O6 octahedra and corners with four equivalent W(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 42-62°. The Y(1)-O(1) bond length is 2.25 Å. The Y(1)-O(2) bond length is 2.27 Å. The Y(1)-O(4) bond length is 2.36 Å. The Y(1)-O(5) bond length is 2.57 Å. The Y(1)-O(6) bond length is 2.26 Å. The Y(1)-O(8) bond length is 2.28 Å. There are two inequivalent W sites. In the first W site, W(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 WO6 octahedra that share corners with four equivalent Y(1)O6 octahedra and edges with two equivalent W(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 42-60°. The W(1)-O(1) bond length is 1.84 Å. The W(1)-O(2) bond length is 1.98 Å. The W(1)-O(3) bond length is 2.13 Å. The W(1)-O(4) bond length is 2.14 Å. The W(1)-O(7) bond length is 1.99 Å. The W(1)-O(8) bond length is 2.09 Å. In the second W site, W(2) is bonded to one O(3), one O(4), one O(5), one O(6), one O(7), and one O(8) atom to form distorted WO6 octahedra that share corners with four equivalent Y(1)O6 octahedra and edges with two equivalent W(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 47-62°. The W(2)-O(3) bond length is 1.96 Å. The W(2)-O(4) bond length is 1.97 Å. The W(2)-O(5) bond length is 1.85 Å. The W(2)-O(6) bond length is 1.83 Å. The W(2)-O(7) bond length is 2.17 Å. The W(2)-O(8) bond length is 2.06 Å. Cr(1) is bonded in a distorted square co-planar geometry to one O(2), one O(3), one O(5), and one O(7) atom. The Cr(1)-O(2) bond length is 2.12 Å. The Cr(1)-O(3) bond length is 2.03 Å. The Cr(1)-O(5) bond length is 2.24 Å. The Cr(1)-O(7) bond length is 2.00 Å. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Y(1) and one W(1) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to one Y(1), one W(1), and one Cr(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one W(1), one W(2), and one Cr(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Y(1), one W(1), and one W(2) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Y(1), one W(2), and one Cr(1) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one Y(1) and one W(2) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one W(1), one W(2), and one Cr(1) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one Y(1), one W(1), and one W(2) atom.