CrPO4 crystallizes in the orthorhombic Imma space group. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms to form CrO6 octahedra that share corners with two equivalent Cr(2)O6 octahedra, corners with two equivalent P(1)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra,  an edgeedge with one Cr(1)O6 octahedra, and  an edgeedge with one P(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 57°. In the second Cr site, Cr(2) is bonded to two equivalent O(1) and four equivalent O(4) atoms to form CrO6 octahedra that share corners with four equivalent Cr(1)O6 octahedra, corners with two equivalent P(2)O4 tetrahedra, and corners with four equivalent P(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 57°. There are two inequivalent P sites. In the first P site, P(1) is bonded to two equivalent O(2) and two equivalent O(4) atoms to form PO4 tetrahedra that share corners with two equivalent Cr(1)O6 octahedra, corners with two equivalent Cr(2)O6 octahedra, and  an edgeedge with one Cr(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 39-54°. In the second P site, P(2) is bonded to two equivalent O(1) and two equivalent O(3) atoms to form PO4 tetrahedra that share corners with two equivalent Cr(2)O6 octahedra and corners with four equivalent Cr(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 40-55°. There are four inequivalent O sites. In the first O site, O(3) is bonded in a distorted trigonal planar geometry to two equivalent Cr(1) and one P(2) atom. In the second O site, O(4) is bonded in a distorted trigonal planar geometry to one Cr(1), one Cr(2), and one P(1) atom. In the third O site, O(1) is bonded in a bent 150 degrees geometry to one Cr(2) and one P(2) atom. In the fourth O site, O(2) is bonded in a bent 150 degrees geometry to one Cr(1) and one P(1) atom.
CrPO4 crystallizes in the orthorhombic Imma space group. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms to form CrO6 octahedra that share corners with two equivalent Cr(2)O6 octahedra, corners with two equivalent P(1)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra,  an edgeedge with one Cr(1)O6 octahedra, and  an edgeedge with one P(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 57°. Both Cr(1)-O(2) bond lengths are 1.95 Å. Both Cr(1)-O(3) bond lengths are 2.01 Å. Both Cr(1)-O(4) bond lengths are 2.00 Å. In the second Cr site, Cr(2) is bonded to two equivalent O(1) and four equivalent O(4) atoms to form CrO6 octahedra that share corners with four equivalent Cr(1)O6 octahedra, corners with two equivalent P(2)O4 tetrahedra, and corners with four equivalent P(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 57°. Both Cr(2)-O(1) bond lengths are 1.97 Å. All Cr(2)-O(4) bond lengths are 1.99 Å. There are two inequivalent P sites. In the first P site, P(1) is bonded to two equivalent O(2) and two equivalent O(4) atoms to form PO4 tetrahedra that share corners with two equivalent Cr(1)O6 octahedra, corners with two equivalent Cr(2)O6 octahedra, and  an edgeedge with one Cr(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 39-54°. Both P(1)-O(2) bond lengths are 1.49 Å. Both P(1)-O(4) bond lengths are 1.59 Å. In the second P site, P(2) is bonded to two equivalent O(1) and two equivalent O(3) atoms to form PO4 tetrahedra that share corners with two equivalent Cr(2)O6 octahedra and corners with four equivalent Cr(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 40-55°. Both P(2)-O(1) bond lengths are 1.51 Å. Both P(2)-O(3) bond lengths are 1.57 Å. There are four inequivalent O sites. In the first O site, O(3) is bonded in a distorted trigonal planar geometry to two equivalent Cr(1) and one P(2) atom. In the second O site, O(4) is bonded in a distorted trigonal planar geometry to one Cr(1), one Cr(2), and one P(1) atom. In the third O site, O(1) is bonded in a bent 150 degrees geometry to one Cr(2) and one P(2) atom. In the fourth O site, O(2) is bonded in a bent 150 degrees geometry to one Cr(1) and one P(1) atom.