CrZn(GeO3)2 is Esseneite structured and crystallizes in the monoclinic C2/c space group. Cr(1) is bonded to two equivalent O(2) and four equivalent O(3) atoms to form CrO6 octahedra that share corners with six equivalent Ge(1)O4 tetrahedra and edges with two equivalent Cr(1)O6 octahedra. Zn(1) is bonded in a rectangular see-saw-like geometry to two equivalent O(2) and two equivalent O(3) atoms. Ge(1) is bonded to one O(2), one O(3), and two equivalent O(1) atoms to form GeO4 tetrahedra that share corners with three equivalent Cr(1)O6 octahedra and corners with two equivalent Ge(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 49-58°. There are three inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to two equivalent Ge(1) atoms. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Cr(1), one Zn(1), and one Ge(1) atom. In the third O site, O(3) is bonded in a distorted rectangular see-saw-like geometry to two equivalent Cr(1), one Zn(1), and one Ge(1) atom.
CrZn(GeO3)2 is Esseneite structured and crystallizes in the monoclinic C2/c space group. Cr(1) is bonded to two equivalent O(2) and four equivalent O(3) atoms to form CrO6 octahedra that share corners with six equivalent Ge(1)O4 tetrahedra and edges with two equivalent Cr(1)O6 octahedra. Both Cr(1)-O(2) bond lengths are 2.13 Å. There are two shorter (2.17 Å) and two longer (2.32 Å) Cr(1)-O(3) bond lengths. Zn(1) is bonded in a rectangular see-saw-like geometry to two equivalent O(2) and two equivalent O(3) atoms. Both Zn(1)-O(2) bond lengths are 1.99 Å. Both Zn(1)-O(3) bond lengths are 2.08 Å. Ge(1) is bonded to one O(2), one O(3), and two equivalent O(1) atoms to form GeO4 tetrahedra that share corners with three equivalent Cr(1)O6 octahedra and corners with two equivalent Ge(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 49-58°. The Ge(1)-O(2) bond length is 1.75 Å. The Ge(1)-O(3) bond length is 1.77 Å. Both Ge(1)-O(1) bond lengths are 1.81 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to two equivalent Ge(1) atoms. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Cr(1), one Zn(1), and one Ge(1) atom. In the third O site, O(3) is bonded in a distorted rectangular see-saw-like geometry to two equivalent Cr(1), one Zn(1), and one Ge(1) atom.