YFe(WO4)2 is Hydrophilite-derived structured and crystallizes in the triclinic P1 space group. There are two inequivalent Y sites. In the first Y site, Y(1) is bonded to one O(1), one O(11), one O(13), one O(15), one O(3), and one O(9) atom to form distorted YO6 octahedra that share corners with two equivalent W(1)O6 octahedra, corners with two equivalent W(2)O6 octahedra, corners with two equivalent W(3)O6 octahedra, corners with two equivalent W(4)O6 octahedra, and edges with two equivalent Fe(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 47-60°. In the second Y site, Y(2) is bonded in a 6-coordinate geometry to one O(10), one O(12), one O(14), one O(16), one O(2), and one O(4) atom. There are four inequivalent W sites. In the first W site, W(1) is bonded to one O(12), one O(15), one O(16), one O(3), one O(5), and one O(6) atom to form WO6 octahedra that share corners with two equivalent Y(1)O6 octahedra, corners with two equivalent Fe(1)O6 octahedra, corners with two equivalent Fe(2)O6 octahedra, and edges with two equivalent W(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 38-60°. In the second W site, W(2) is bonded to one O(11), one O(15), one O(16), one O(4), one O(5), and one O(6) atom to form WO6 octahedra that share corners with two equivalent Y(1)O6 octahedra, corners with two equivalent Fe(1)O6 octahedra, corners with two equivalent Fe(2)O6 octahedra, and edges with two equivalent W(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 37-60°. In the third W site, W(3) is bonded to one O(1), one O(10), one O(13), one O(14), one O(7), and one O(8) atom to form distorted WO6 octahedra that share corners with two equivalent Y(1)O6 octahedra, corners with two equivalent Fe(1)O6 octahedra, corners with two equivalent Fe(2)O6 octahedra, and edges with two equivalent W(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 40-60°. In the fourth W site, W(4) is bonded to one O(13), one O(14), one O(2), one O(7), one O(8), and one O(9) atom to form distorted WO6 octahedra that share corners with two equivalent Y(1)O6 octahedra, corners with two equivalent Fe(1)O6 octahedra, corners with two equivalent Fe(2)O6 octahedra, and edges with two equivalent W(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 39-59°. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(10), one O(12), one O(2), one O(4), one O(5), and one O(7) atom to form distorted FeO6 octahedra that share corners with two equivalent W(1)O6 octahedra, corners with two equivalent W(2)O6 octahedra, corners with two equivalent W(3)O6 octahedra, and corners with two equivalent W(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 38-60°. In the second Fe site, Fe(2) is bonded to one O(1), one O(11), one O(3), one O(6), one O(8), and one O(9) atom to form distorted FeO6 octahedra that share corners with two equivalent W(1)O6 octahedra, corners with two equivalent W(2)O6 octahedra, corners with two equivalent W(3)O6 octahedra, corners with two equivalent W(4)O6 octahedra, and edges with two equivalent Y(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 37-59°. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Y(1), one W(3), and one Fe(2) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Y(2), one W(4), and one Fe(1) atom. In the third O site, O(3) is bonded in a trigonal planar geometry to one Y(1), one W(1), and one Fe(2) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Y(2), one W(2), and one Fe(1) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one W(1), one W(2), and one Fe(1) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one W(1), one W(2), and one Fe(2) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one W(3), one W(4), and one Fe(1) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one W(3), one W(4), and one Fe(2) atom. In the ninth O site, O(9) is bonded in a 3-coordinate geometry to one Y(1), one W(4), and one Fe(2) atom. In the tenth O site, O(10) is bonded in a 3-coordinate geometry to one Y(2), one W(3), and one Fe(1) atom. In the eleventh O site, O(11) is bonded in a distorted trigonal planar geometry to one Y(1), one W(2), and one Fe(2) atom. In the twelfth O site, O(12) is bonded in a distorted trigonal planar geometry to one Y(2), one W(1), and one Fe(1) atom. In the thirteenth O site, O(13) is bonded in a trigonal planar geometry to one Y(1), one W(3), and one W(4) atom. In the fourteenth O site, O(14) is bonded in a trigonal planar geometry to one Y(2), one W(3), and one W(4) atom. In the fifteenth O site, O(15) is bonded in a trigonal planar geometry to one Y(1), one W(1), and one W(2) atom. In the sixteenth O site, O(16) is bonded in a trigonal planar geometry to one Y(2), one W(1), and one W(2) atom.
YFe(WO4)2 is Hydrophilite-derived structured and crystallizes in the triclinic P1 space group. There are two inequivalent Y sites. In the first Y site, Y(1) is bonded to one O(1), one O(11), one O(13), one O(15), one O(3), and one O(9) atom to form distorted YO6 octahedra that share corners with two equivalent W(1)O6 octahedra, corners with two equivalent W(2)O6 octahedra, corners with two equivalent W(3)O6 octahedra, corners with two equivalent W(4)O6 octahedra, and edges with two equivalent Fe(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 47-60°. The Y(1)-O(1) bond length is 2.42 Å. The Y(1)-O(11) bond length is 2.25 Å. The Y(1)-O(13) bond length is 2.32 Å. The Y(1)-O(15) bond length is 2.18 Å. The Y(1)-O(3) bond length is 2.21 Å. The Y(1)-O(9) bond length is 2.35 Å. In the second Y site, Y(2) is bonded in a 6-coordinate geometry to one O(10), one O(12), one O(14), one O(16), one O(2), and one O(4) atom. The Y(2)-O(10) bond length is 2.33 Å. The Y(2)-O(12) bond length is 2.24 Å. The Y(2)-O(14) bond length is 2.31 Å. The Y(2)-O(16) bond length is 2.18 Å. The Y(2)-O(2) bond length is 2.46 Å. The Y(2)-O(4) bond length is 2.23 Å. There are four inequivalent W sites. In the first W site, W(1) is bonded to one O(12), one O(15), one O(16), one O(3), one O(5), and one O(6) atom to form WO6 octahedra that share corners with two equivalent Y(1)O6 octahedra, corners with two equivalent Fe(1)O6 octahedra, corners with two equivalent Fe(2)O6 octahedra, and edges with two equivalent W(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 38-60°. The W(1)-O(12) bond length is 1.88 Å. The W(1)-O(15) bond length is 2.06 Å. The W(1)-O(16) bond length is 2.07 Å. The W(1)-O(3) bond length is 1.96 Å. The W(1)-O(5) bond length is 2.13 Å. The W(1)-O(6) bond length is 2.02 Å. In the second W site, W(2) is bonded to one O(11), one O(15), one O(16), one O(4), one O(5), and one O(6) atom to form WO6 octahedra that share corners with two equivalent Y(1)O6 octahedra, corners with two equivalent Fe(1)O6 octahedra, corners with two equivalent Fe(2)O6 octahedra, and edges with two equivalent W(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 37-60°. The W(2)-O(11) bond length is 1.89 Å. The W(2)-O(15) bond length is 2.07 Å. The W(2)-O(16) bond length is 2.06 Å. The W(2)-O(4) bond length is 1.98 Å. The W(2)-O(5) bond length is 2.01 Å. The W(2)-O(6) bond length is 2.13 Å. In the third W site, W(3) is bonded to one O(1), one O(10), one O(13), one O(14), one O(7), and one O(8) atom to form distorted WO6 octahedra that share corners with two equivalent Y(1)O6 octahedra, corners with two equivalent Fe(1)O6 octahedra, corners with two equivalent Fe(2)O6 octahedra, and edges with two equivalent W(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 40-60°. The W(3)-O(1) bond length is 1.83 Å. The W(3)-O(10) bond length is 1.83 Å. The W(3)-O(13) bond length is 2.12 Å. The W(3)-O(14) bond length is 1.99 Å. The W(3)-O(7) bond length is 2.15 Å. The W(3)-O(8) bond length is 1.96 Å. In the fourth W site, W(4) is bonded to one O(13), one O(14), one O(2), one O(7), one O(8), and one O(9) atom to form distorted WO6 octahedra that share corners with two equivalent Y(1)O6 octahedra, corners with two equivalent Fe(1)O6 octahedra, corners with two equivalent Fe(2)O6 octahedra, and edges with two equivalent W(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 39-59°. The W(4)-O(13) bond length is 1.99 Å. The W(4)-O(14) bond length is 2.12 Å. The W(4)-O(2) bond length is 1.84 Å. The W(4)-O(7) bond length is 1.95 Å. The W(4)-O(8) bond length is 2.14 Å. The W(4)-O(9) bond length is 1.84 Å. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(10), one O(12), one O(2), one O(4), one O(5), and one O(7) atom to form distorted FeO6 octahedra that share corners with two equivalent W(1)O6 octahedra, corners with two equivalent W(2)O6 octahedra, corners with two equivalent W(3)O6 octahedra, and corners with two equivalent W(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 38-60°. The Fe(1)-O(10) bond length is 2.48 Å. The Fe(1)-O(12) bond length is 2.27 Å. The Fe(1)-O(2) bond length is 2.16 Å. The Fe(1)-O(4) bond length is 2.01 Å. The Fe(1)-O(5) bond length is 2.12 Å. The Fe(1)-O(7) bond length is 2.35 Å. In the second Fe site, Fe(2) is bonded to one O(1), one O(11), one O(3), one O(6), one O(8), and one O(9) atom to form distorted FeO6 octahedra that share corners with two equivalent W(1)O6 octahedra, corners with two equivalent W(2)O6 octahedra, corners with two equivalent W(3)O6 octahedra, corners with two equivalent W(4)O6 octahedra, and edges with two equivalent Y(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 37-59°. The Fe(2)-O(1) bond length is 2.19 Å. The Fe(2)-O(11) bond length is 2.24 Å. The Fe(2)-O(3) bond length is 2.05 Å. The Fe(2)-O(6) bond length is 2.05 Å. The Fe(2)-O(8) bond length is 2.36 Å. The Fe(2)-O(9) bond length is 2.46 Å. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Y(1), one W(3), and one Fe(2) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Y(2), one W(4), and one Fe(1) atom. In the third O site, O(3) is bonded in a trigonal planar geometry to one Y(1), one W(1), and one Fe(2) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Y(2), one W(2), and one Fe(1) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one W(1), one W(2), and one Fe(1) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one W(1), one W(2), and one Fe(2) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one W(3), one W(4), and one Fe(1) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one W(3), one W(4), and one Fe(2) atom. In the ninth O site, O(9) is bonded in a 3-coordinate geometry to one Y(1), one W(4), and one Fe(2) atom. In the tenth O site, O(10) is bonded in a 3-coordinate geometry to one Y(2), one W(3), and one Fe(1) atom. In the eleventh O site, O(11) is bonded in a distorted trigonal planar geometry to one Y(1), one W(2), and one Fe(2) atom. In the twelfth O site, O(12) is bonded in a distorted trigonal planar geometry to one Y(2), one W(1), and one Fe(1) atom. In the thirteenth O site, O(13) is bonded in a trigonal planar geometry to one Y(1), one W(3), and one W(4) atom. In the fourteenth O site, O(14) is bonded in a trigonal planar geometry to one Y(2), one W(3), and one W(4) atom. In the fifteenth O site, O(15) is bonded in a trigonal planar geometry to one Y(1), one W(1), and one W(2) atom. In the sixteenth O site, O(16) is bonded in a trigonal planar geometry to one Y(2), one W(1), and one W(2) atom.