Ta2CrZn2O8 crystallizes in the monoclinic C2/c space group. Ta(1) is bonded to one O(2), one O(4), two equivalent O(1), and two equivalent O(3) atoms to form distorted TaO6 octahedra that share corners with four equivalent Cr(1)O6 octahedra and edges with two equivalent Ta(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 49-55°. Cr(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form CrO6 octahedra that share corners with eight equivalent Ta(1)O6 octahedra and edges with two equivalent Cr(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 49-55°. Zn(1) is bonded in a distorted see-saw-like geometry to one O(3) and three equivalent O(4) atoms. There are four inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to two equivalent Ta(1) and one Cr(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Ta(1) and two equivalent Cr(1) atoms. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to two equivalent Ta(1) and one Zn(1) atom. In the fourth O site, O(4) is bonded to one Ta(1) and three equivalent Zn(1) atoms to form a mixture of corner and edge-sharing OTaZn3 trigonal pyramids.
Ta2CrZn2O8 crystallizes in the monoclinic C2/c space group. Ta(1) is bonded to one O(2), one O(4), two equivalent O(1), and two equivalent O(3) atoms to form distorted TaO6 octahedra that share corners with four equivalent Cr(1)O6 octahedra and edges with two equivalent Ta(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 49-55°. The Ta(1)-O(2) bond length is 1.86 Å. The Ta(1)-O(4) bond length is 2.03 Å. There is one shorter (1.99 Å) and one longer (2.04 Å) Ta(1)-O(1) bond length. There is one shorter (2.05 Å) and one longer (2.22 Å) Ta(1)-O(3) bond length. Cr(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form CrO6 octahedra that share corners with eight equivalent Ta(1)O6 octahedra and edges with two equivalent Cr(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 49-55°. Both Cr(1)-O(1) bond lengths are 2.26 Å. There are two shorter (2.07 Å) and two longer (2.26 Å) Cr(1)-O(2) bond lengths. Zn(1) is bonded in a distorted see-saw-like geometry to one O(3) and three equivalent O(4) atoms. The Zn(1)-O(3) bond length is 1.98 Å. There are a spread of Zn(1)-O(4) bond distances ranging from 1.98-2.16 Å. There are four inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to two equivalent Ta(1) and one Cr(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Ta(1) and two equivalent Cr(1) atoms. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to two equivalent Ta(1) and one Zn(1) atom. In the fourth O site, O(4) is bonded to one Ta(1) and three equivalent Zn(1) atoms to form a mixture of corner and edge-sharing OTaZn3 trigonal pyramids.