CrZnPO5 crystallizes in the triclinic P1 space group. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to one O(1), one O(10), one O(4), one O(6), one O(7), and one O(9) atom to form CrO6 octahedra that share corners with two equivalent Cr(2)O6 octahedra, corners with two equivalent P(1)O4 tetrahedra, and corners with two equivalent P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 42°. In the second Cr site, Cr(2) is bonded to one O(10), one O(2), one O(3), one O(5), one O(8), and one O(9) atom to form CrO6 octahedra that share corners with two equivalent Cr(1)O6 octahedra, corners with two equivalent P(1)O4 tetrahedra, and corners with two equivalent P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 42°. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a 5-coordinate geometry to one O(10), one O(2), one O(4), one O(6), and one O(8) atom. In the second Zn site, Zn(2) is bonded in a 5-coordinate geometry to one O(1), one O(3), one O(5), one O(7), and one O(9) atom. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(3), one O(6), and one O(8) atom to form PO4 tetrahedra that share corners with two equivalent Cr(1)O6 octahedra and corners with two equivalent Cr(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 37-43°. In the second P site, P(2) is bonded to one O(2), one O(4), one O(5), and one O(7) atom to form PO4 tetrahedra that share corners with two equivalent Cr(1)O6 octahedra and corners with two equivalent Cr(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 36-43°. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to one Cr(1), one Zn(2), and one P(1) atom. In the second O site, O(2) is bonded in a 2-coordinate geometry to one Cr(2), one Zn(1), and one P(2) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Cr(2), one Zn(2), and one P(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Cr(1), one Zn(1), and one P(2) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Cr(2), one Zn(2), and one P(2) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Cr(1), one Zn(1), and one P(1) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one Cr(1), one Zn(2), and one P(2) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one Cr(2), one Zn(1), and one P(1) atom. In the ninth O site, O(9) is bonded in a trigonal planar geometry to one Cr(1), one Cr(2), and one Zn(2) atom. In the tenth O site, O(10) is bonded in a trigonal planar geometry to one Cr(1), one Cr(2), and one Zn(1) atom.
CrZnPO5 crystallizes in the triclinic P1 space group. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to one O(1), one O(10), one O(4), one O(6), one O(7), and one O(9) atom to form CrO6 octahedra that share corners with two equivalent Cr(2)O6 octahedra, corners with two equivalent P(1)O4 tetrahedra, and corners with two equivalent P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 42°. The Cr(1)-O(1) bond length is 2.04 Å. The Cr(1)-O(10) bond length is 1.94 Å. The Cr(1)-O(4) bond length is 2.06 Å. The Cr(1)-O(6) bond length is 2.06 Å. The Cr(1)-O(7) bond length is 2.06 Å. The Cr(1)-O(9) bond length is 1.94 Å. In the second Cr site, Cr(2) is bonded to one O(10), one O(2), one O(3), one O(5), one O(8), and one O(9) atom to form CrO6 octahedra that share corners with two equivalent Cr(1)O6 octahedra, corners with two equivalent P(1)O4 tetrahedra, and corners with two equivalent P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 42°. The Cr(2)-O(10) bond length is 1.94 Å. The Cr(2)-O(2) bond length is 2.04 Å. The Cr(2)-O(3) bond length is 2.06 Å. The Cr(2)-O(5) bond length is 2.06 Å. The Cr(2)-O(8) bond length is 2.06 Å. The Cr(2)-O(9) bond length is 1.94 Å. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a 5-coordinate geometry to one O(10), one O(2), one O(4), one O(6), and one O(8) atom. The Zn(1)-O(10) bond length is 1.85 Å. The Zn(1)-O(2) bond length is 2.55 Å. The Zn(1)-O(4) bond length is 2.34 Å. The Zn(1)-O(6) bond length is 2.03 Å. The Zn(1)-O(8) bond length is 2.07 Å. In the second Zn site, Zn(2) is bonded in a 5-coordinate geometry to one O(1), one O(3), one O(5), one O(7), and one O(9) atom. The Zn(2)-O(1) bond length is 2.55 Å. The Zn(2)-O(3) bond length is 2.35 Å. The Zn(2)-O(5) bond length is 2.03 Å. The Zn(2)-O(7) bond length is 2.07 Å. The Zn(2)-O(9) bond length is 1.85 Å. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(3), one O(6), and one O(8) atom to form PO4 tetrahedra that share corners with two equivalent Cr(1)O6 octahedra and corners with two equivalent Cr(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 37-43°. The P(1)-O(1) bond length is 1.54 Å. The P(1)-O(3) bond length is 1.55 Å. The P(1)-O(6) bond length is 1.58 Å. The P(1)-O(8) bond length is 1.57 Å. In the second P site, P(2) is bonded to one O(2), one O(4), one O(5), and one O(7) atom to form PO4 tetrahedra that share corners with two equivalent Cr(1)O6 octahedra and corners with two equivalent Cr(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 36-43°. The P(2)-O(2) bond length is 1.54 Å. The P(2)-O(4) bond length is 1.55 Å. The P(2)-O(5) bond length is 1.58 Å. The P(2)-O(7) bond length is 1.57 Å. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to one Cr(1), one Zn(2), and one P(1) atom. In the second O site, O(2) is bonded in a 2-coordinate geometry to one Cr(2), one Zn(1), and one P(2) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Cr(2), one Zn(2), and one P(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Cr(1), one Zn(1), and one P(2) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Cr(2), one Zn(2), and one P(2) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Cr(1), one Zn(1), and one P(1) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one Cr(1), one Zn(2), and one P(2) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one Cr(2), one Zn(1), and one P(1) atom. In the ninth O site, O(9) is bonded in a trigonal planar geometry to one Cr(1), one Cr(2), and one Zn(2) atom. In the tenth O site, O(10) is bonded in a trigonal planar geometry to one Cr(1), one Cr(2), and one Zn(1) atom.