CrPO4 crystallizes in the monoclinic P2_1/c space group. Cr(1) is bonded to one O(1), one O(2), one O(3), and two equivalent O(4) atoms to form distorted CrO5 square pyramids that share corners with three equivalent P(1)O4 tetrahedra,  an edgeedge with one Cr(1)O5 square pyramid, and  an edgeedge with one P(1)O4 tetrahedra. P(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form PO4 tetrahedra that share corners with three equivalent Cr(1)O5 square pyramids and  an edgeedge with one Cr(1)O5 square pyramid. There are four inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Cr(1) and one P(1) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Cr(1) and one P(1) atom. In the third O site, O(3) is bonded in a water-like geometry to one Cr(1) and one P(1) atom. In the fourth O site, O(4) is bonded in a distorted T-shaped geometry to two equivalent Cr(1) and one P(1) atom.
CrPO4 crystallizes in the monoclinic P2_1/c space group. Cr(1) is bonded to one O(1), one O(2), one O(3), and two equivalent O(4) atoms to form distorted CrO5 square pyramids that share corners with three equivalent P(1)O4 tetrahedra,  an edgeedge with one Cr(1)O5 square pyramid, and  an edgeedge with one P(1)O4 tetrahedra. The Cr(1)-O(1) bond length is 1.96 Å. The Cr(1)-O(2) bond length is 1.94 Å. The Cr(1)-O(3) bond length is 1.95 Å. There is one shorter (2.01 Å) and one longer (2.12 Å) Cr(1)-O(4) bond length. P(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form PO4 tetrahedra that share corners with three equivalent Cr(1)O5 square pyramids and  an edgeedge with one Cr(1)O5 square pyramid. The P(1)-O(1) bond length is 1.52 Å. The P(1)-O(2) bond length is 1.54 Å. The P(1)-O(3) bond length is 1.56 Å. The P(1)-O(4) bond length is 1.61 Å. There are four inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Cr(1) and one P(1) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Cr(1) and one P(1) atom. In the third O site, O(3) is bonded in a water-like geometry to one Cr(1) and one P(1) atom. In the fourth O site, O(4) is bonded in a distorted T-shaped geometry to two equivalent Cr(1) and one P(1) atom.