CdP2 crystallizes in the orthorhombic Pna2_1 space group. Cd(1) is bonded to two equivalent P(1) and two equivalent P(2) atoms to form CdP4 tetrahedra that share corners with four equivalent Cd(1)P4 tetrahedra, corners with four equivalent P(1)Cd2P2 tetrahedra, and corners with four equivalent P(2)Cd2P2 tetrahedra. There are two inequivalent P sites. In the first P site, P(2) is bonded to two equivalent Cd(1) and two equivalent P(1) atoms to form PCd2P2 tetrahedra that share corners with four equivalent Cd(1)P4 tetrahedra, corners with four equivalent P(1)Cd2P2 tetrahedra, and corners with four equivalent P(2)Cd2P2 tetrahedra. In the second P site, P(1) is bonded to two equivalent Cd(1) and two equivalent P(2) atoms to form PCd2P2 tetrahedra that share corners with four equivalent Cd(1)P4 tetrahedra, corners with four equivalent P(1)Cd2P2 tetrahedra, and corners with four equivalent P(2)Cd2P2 tetrahedra.
CdP2 crystallizes in the orthorhombic Pna2_1 space group. Cd(1) is bonded to two equivalent P(1) and two equivalent P(2) atoms to form CdP4 tetrahedra that share corners with four equivalent Cd(1)P4 tetrahedra, corners with four equivalent P(1)Cd2P2 tetrahedra, and corners with four equivalent P(2)Cd2P2 tetrahedra. There is one shorter (2.59 Å) and one longer (2.62 Å) Cd(1)-P(1) bond length. There is one shorter (2.55 Å) and one longer (2.60 Å) Cd(1)-P(2) bond length. There are two inequivalent P sites. In the first P site, P(2) is bonded to two equivalent Cd(1) and two equivalent P(1) atoms to form PCd2P2 tetrahedra that share corners with four equivalent Cd(1)P4 tetrahedra, corners with four equivalent P(1)Cd2P2 tetrahedra, and corners with four equivalent P(2)Cd2P2 tetrahedra. There is one shorter (2.17 Å) and one longer (2.20 Å) P(2)-P(1) bond length. In the second P site, P(1) is bonded to two equivalent Cd(1) and two equivalent P(2) atoms to form PCd2P2 tetrahedra that share corners with four equivalent Cd(1)P4 tetrahedra, corners with four equivalent P(1)Cd2P2 tetrahedra, and corners with four equivalent P(2)Cd2P2 tetrahedra.