CuBi(WO4)2 crystallizes in the triclinic P-1 space group. W(1) is bonded to one O(3), one O(4), two equivalent O(1), and two equivalent O(2) atoms to form distorted WO6 octahedra that share corners with four equivalent Bi(1)O6 octahedra and edges with two equivalent W(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 37-56°. Cu(1) is bonded in a distorted linear geometry to two equivalent O(2) and two equivalent O(3) atoms. Bi(1) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(4) atoms to form BiO6 octahedra that share corners with eight equivalent W(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 37-56°. There are four inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to two equivalent W(1) and one Bi(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to two equivalent W(1) and one Cu(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one W(1), one Cu(1), and one Bi(1) atom. In the fourth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one W(1) and one Bi(1) atom.
CuBi(WO4)2 crystallizes in the triclinic P-1 space group. W(1) is bonded to one O(3), one O(4), two equivalent O(1), and two equivalent O(2) atoms to form distorted WO6 octahedra that share corners with four equivalent Bi(1)O6 octahedra and edges with two equivalent W(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 37-56°. The W(1)-O(3) bond length is 1.82 Å. The W(1)-O(4) bond length is 1.89 Å. There is one shorter (2.00 Å) and one longer (2.08 Å) W(1)-O(1) bond length. There is one shorter (1.94 Å) and one longer (2.20 Å) W(1)-O(2) bond length. Cu(1) is bonded in a distorted linear geometry to two equivalent O(2) and two equivalent O(3) atoms. Both Cu(1)-O(2) bond lengths are 1.86 Å. Both Cu(1)-O(3) bond lengths are 2.62 Å. Bi(1) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(4) atoms to form BiO6 octahedra that share corners with eight equivalent W(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 37-56°. Both Bi(1)-O(1) bond lengths are 2.42 Å. Both Bi(1)-O(3) bond lengths are 2.41 Å. Both Bi(1)-O(4) bond lengths are 2.34 Å. There are four inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to two equivalent W(1) and one Bi(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to two equivalent W(1) and one Cu(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one W(1), one Cu(1), and one Bi(1) atom. In the fourth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one W(1) and one Bi(1) atom.