WO3 crystallizes in the triclinic P1 space group. There are seven inequivalent W sites. In the first W site, W(1) is bonded to one O(1), one O(10), one O(2), one O(4), one O(5), and one O(8) atom to form WO6 octahedra that share  a cornercorner with one W(2)O6 octahedra,  a cornercorner with one W(4)O6 octahedra,  a cornercorner with one W(6)O6 octahedra, corners with two equivalent W(7)O6 octahedra, and  a cornercorner with one W(3)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 19-40°. In the second W site, W(2) is bonded to one O(1), one O(14), one O(17), one O(21), one O(6), and one O(9) atom to form corner-sharing WO6 octahedra. The corner-sharing octahedral tilt angles range from 31-39°. In the third W site, W(3) is bonded to one O(10), one O(11), one O(12), one O(13), and one O(7) atom to form distorted corner-sharing WO5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 28-37°. In the fourth W site, W(4) is bonded to one O(12), one O(14), one O(15), one O(16), one O(2), and one O(3) atom to form WO6 octahedra that share  a cornercorner with one W(1)O6 octahedra,  a cornercorner with one W(2)O6 octahedra,  a cornercorner with one W(6)O6 octahedra, corners with two equivalent W(5)O6 octahedra, and  a cornercorner with one W(3)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 19-38°. In the fifth W site, W(5) is bonded to one O(13), one O(15), one O(16), one O(18), one O(20), and one O(21) atom to form WO6 octahedra that share  a cornercorner with one W(2)O6 octahedra,  a cornercorner with one W(6)O6 octahedra,  a cornercorner with one W(7)O6 octahedra, corners with two equivalent W(4)O6 octahedra, and  a cornercorner with one W(3)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 19-38°. In the sixth W site, W(6) is bonded to one O(17), one O(18), one O(19), one O(3), one O(4), and one O(6) atom to form corner-sharing WO6 octahedra. The corner-sharing octahedral tilt angles range from 32-40°. In the seventh W site, W(7) is bonded to one O(11), one O(19), one O(20), one O(5), one O(8), and one O(9) atom to form WO6 octahedra that share  a cornercorner with one W(2)O6 octahedra,  a cornercorner with one W(5)O6 octahedra,  a cornercorner with one W(6)O6 octahedra, corners with two equivalent W(1)O6 octahedra, and  a cornercorner with one W(3)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 19-40°. There are twenty-one inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one W(1) and one W(2) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one W(1) and one W(4) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one W(4) and one W(6) atom. In the fourth O site, O(4) is bonded in a bent 150 degrees geometry to one W(1) and one W(6) atom. In the fifth O site, O(5) is bonded in a bent 150 degrees geometry to one W(1) and one W(7) atom. In the sixth O site, O(6) is bonded in a bent 150 degrees geometry to one W(2) and one W(6) atom. In the seventh O site, O(7) is bonded in a single-bond geometry to one W(3) atom. In the eighth O site, O(8) is bonded in a bent 150 degrees geometry to one W(1) and one W(7) atom. In the ninth O site, O(9) is bonded in a bent 150 degrees geometry to one W(2) and one W(7) atom. In the tenth O site, O(10) is bonded in a bent 150 degrees geometry to one W(1) and one W(3) atom. In the eleventh O site, O(11) is bonded in a bent 150 degrees geometry to one W(3) and one W(7) atom. In the twelfth O site, O(12) is bonded in a bent 150 degrees geometry to one W(3) and one W(4) atom. In the thirteenth O site, O(13) is bonded in a bent 150 degrees geometry to one W(3) and one W(5) atom. In the fourteenth O site, O(14) is bonded in a bent 150 degrees geometry to one W(2) and one W(4) atom. In the fifteenth O site, O(15) is bonded in a bent 150 degrees geometry to one W(4) and one W(5) atom. In the sixteenth O site, O(16) is bonded in a bent 150 degrees geometry to one W(4) and one W(5) atom. In the seventeenth O site, O(17) is bonded in a bent 150 degrees geometry to one W(2) and one W(6) atom. In the eighteenth O site, O(18) is bonded in a bent 150 degrees geometry to one W(5) and one W(6) atom. In the nineteenth O site, O(19) is bonded in a bent 150 degrees geometry to one W(6) and one W(7) atom. In the twentieth O site, O(20) is bonded in a bent 150 degrees geometry to one W(5) and one W(7) atom. In the twenty-first O site, O(21) is bonded in a bent 150 degrees geometry to one W(2) and one W(5) atom.
WO3 crystallizes in the triclinic P1 space group. There are seven inequivalent W sites. In the first W site, W(1) is bonded to one O(1), one O(10), one O(2), one O(4), one O(5), and one O(8) atom to form WO6 octahedra that share  a cornercorner with one W(2)O6 octahedra,  a cornercorner with one W(4)O6 octahedra,  a cornercorner with one W(6)O6 octahedra, corners with two equivalent W(7)O6 octahedra, and  a cornercorner with one W(3)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 19-40°. The W(1)-O(1) bond length is 1.92 Å. The W(1)-O(10) bond length is 1.93 Å. The W(1)-O(2) bond length is 1.96 Å. The W(1)-O(4) bond length is 1.93 Å. The W(1)-O(5) bond length is 1.94 Å. The W(1)-O(8) bond length is 1.94 Å. In the second W site, W(2) is bonded to one O(1), one O(14), one O(17), one O(21), one O(6), and one O(9) atom to form corner-sharing WO6 octahedra. The corner-sharing octahedral tilt angles range from 31-39°. The W(2)-O(1) bond length is 1.95 Å. The W(2)-O(14) bond length is 1.90 Å. The W(2)-O(17) bond length is 1.85 Å. The W(2)-O(21) bond length is 1.90 Å. The W(2)-O(6) bond length is 2.20 Å. The W(2)-O(9) bond length is 1.95 Å. In the third W site, W(3) is bonded to one O(10), one O(11), one O(12), one O(13), and one O(7) atom to form distorted corner-sharing WO5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 28-37°. The W(3)-O(10) bond length is 1.91 Å. The W(3)-O(11) bond length is 1.91 Å. The W(3)-O(12) bond length is 1.93 Å. The W(3)-O(13) bond length is 1.93 Å. The W(3)-O(7) bond length is 1.73 Å. In the fourth W site, W(4) is bonded to one O(12), one O(14), one O(15), one O(16), one O(2), and one O(3) atom to form WO6 octahedra that share  a cornercorner with one W(1)O6 octahedra,  a cornercorner with one W(2)O6 octahedra,  a cornercorner with one W(6)O6 octahedra, corners with two equivalent W(5)O6 octahedra, and  a cornercorner with one W(3)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 19-38°. The W(4)-O(12) bond length is 1.92 Å. The W(4)-O(14) bond length is 1.97 Å. The W(4)-O(15) bond length is 1.94 Å. The W(4)-O(16) bond length is 1.94 Å. The W(4)-O(2) bond length is 1.90 Å. The W(4)-O(3) bond length is 1.95 Å. In the fifth W site, W(5) is bonded to one O(13), one O(15), one O(16), one O(18), one O(20), and one O(21) atom to form WO6 octahedra that share  a cornercorner with one W(2)O6 octahedra,  a cornercorner with one W(6)O6 octahedra,  a cornercorner with one W(7)O6 octahedra, corners with two equivalent W(4)O6 octahedra, and  a cornercorner with one W(3)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 19-38°. The W(5)-O(13) bond length is 1.92 Å. The W(5)-O(15) bond length is 1.95 Å. The W(5)-O(16) bond length is 1.93 Å. The W(5)-O(18) bond length is 1.95 Å. The W(5)-O(20) bond length is 1.91 Å. The W(5)-O(21) bond length is 1.97 Å. In the sixth W site, W(6) is bonded to one O(17), one O(18), one O(19), one O(3), one O(4), and one O(6) atom to form corner-sharing WO6 octahedra. The corner-sharing octahedral tilt angles range from 32-40°. The W(6)-O(17) bond length is 2.13 Å. The W(6)-O(18) bond length is 1.95 Å. The W(6)-O(19) bond length is 1.96 Å. The W(6)-O(3) bond length is 1.95 Å. The W(6)-O(4) bond length is 1.96 Å. The W(6)-O(6) bond length is 1.83 Å. In the seventh W site, W(7) is bonded to one O(11), one O(19), one O(20), one O(5), one O(8), and one O(9) atom to form WO6 octahedra that share  a cornercorner with one W(2)O6 octahedra,  a cornercorner with one W(5)O6 octahedra,  a cornercorner with one W(6)O6 octahedra, corners with two equivalent W(1)O6 octahedra, and  a cornercorner with one W(3)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 19-40°. The W(7)-O(11) bond length is 1.93 Å. The W(7)-O(19) bond length is 1.93 Å. The W(7)-O(20) bond length is 1.95 Å. The W(7)-O(5) bond length is 1.94 Å. The W(7)-O(8) bond length is 1.94 Å. The W(7)-O(9) bond length is 1.92 Å. There are twenty-one inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one W(1) and one W(2) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one W(1) and one W(4) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one W(4) and one W(6) atom. In the fourth O site, O(4) is bonded in a bent 150 degrees geometry to one W(1) and one W(6) atom. In the fifth O site, O(5) is bonded in a bent 150 degrees geometry to one W(1) and one W(7) atom. In the sixth O site, O(6) is bonded in a bent 150 degrees geometry to one W(2) and one W(6) atom. In the seventh O site, O(7) is bonded in a single-bond geometry to one W(3) atom. In the eighth O site, O(8) is bonded in a bent 150 degrees geometry to one W(1) and one W(7) atom. In the ninth O site, O(9) is bonded in a bent 150 degrees geometry to one W(2) and one W(7) atom. In the tenth O site, O(10) is bonded in a bent 150 degrees geometry to one W(1) and one W(3) atom. In the eleventh O site, O(11) is bonded in a bent 150 degrees geometry to one W(3) and one W(7) atom. In the twelfth O site, O(12) is bonded in a bent 150 degrees geometry to one W(3) and one W(4) atom. In the thirteenth O site, O(13) is bonded in a bent 150 degrees geometry to one W(3) and one W(5) atom. In the fourteenth O site, O(14) is bonded in a bent 150 degrees geometry to one W(2) and one W(4) atom. In the fifteenth O site, O(15) is bonded in a bent 150 degrees geometry to one W(4) and one W(5) atom. In the sixteenth O site, O(16) is bonded in a bent 150 degrees geometry to one W(4) and one W(5) atom. In the seventeenth O site, O(17) is bonded in a bent 150 degrees geometry to one W(2) and one W(6) atom. In the eighteenth O site, O(18) is bonded in a bent 150 degrees geometry to one W(5) and one W(6) atom. In the nineteenth O site, O(19) is bonded in a bent 150 degrees geometry to one W(6) and one W(7) atom. In the twentieth O site, O(20) is bonded in a bent 150 degrees geometry to one W(5) and one W(7) atom. In the twenty-first O site, O(21) is bonded in a bent 150 degrees geometry to one W(2) and one W(5) atom.