AlP2 crystallizes in the orthorhombic Ibca space group. Al(1) is bonded in a 5-coordinate geometry to one P(2), one P(3), one P(4), and two equivalent P(1) atoms. There are four inequivalent P sites. In the first P site, P(1) is bonded in a distorted linear geometry to four equivalent Al(1) and two equivalent P(3) atoms. In the second P site, P(2) is bonded in a distorted bent 120 degrees geometry to two equivalent Al(1) and two equivalent P(4) atoms. In the third P site, P(3) is bonded in a distorted L-shaped geometry to two equivalent Al(1) and two equivalent P(1) atoms. In the fourth P site, P(4) is bonded in a distorted water-like geometry to two equivalent Al(1) and two equivalent P(2) atoms.
AlP2 crystallizes in the orthorhombic Ibca space group. Al(1) is bonded in a 5-coordinate geometry to one P(2), one P(3), one P(4), and two equivalent P(1) atoms. The Al(1)-P(2) bond length is 2.39 Å. The Al(1)-P(3) bond length is 2.38 Å. The Al(1)-P(4) bond length is 2.41 Å. There is one shorter (2.49 Å) and one longer (2.92 Å) Al(1)-P(1) bond length. There are four inequivalent P sites. In the first P site, P(1) is bonded in a distorted linear geometry to four equivalent Al(1) and two equivalent P(3) atoms. Both P(1)-P(3) bond lengths are 2.40 Å. In the second P site, P(2) is bonded in a distorted bent 120 degrees geometry to two equivalent Al(1) and two equivalent P(4) atoms. Both P(2)-P(4) bond lengths are 2.38 Å. In the third P site, P(3) is bonded in a distorted L-shaped geometry to two equivalent Al(1) and two equivalent P(1) atoms. In the fourth P site, P(4) is bonded in a distorted water-like geometry to two equivalent Al(1) and two equivalent P(2) atoms.