AlAs2 crystallizes in the orthorhombic Ibca space group. Al(1) is bonded to one As(1), one As(2), one As(3), and one As(4) atom to form distorted corner-sharing AlAs4 tetrahedra. There are four inequivalent As sites. In the first As site, As(1) is bonded in a distorted linear geometry to two equivalent Al(1) atoms. In the second As site, As(2) is bonded in a distorted bent 120 degrees geometry to two equivalent Al(1) atoms. In the third As site, As(3) is bonded in a distorted water-like geometry to two equivalent Al(1) atoms. In the fourth As site, As(4) is bonded in a distorted L-shaped geometry to two equivalent Al(1) atoms.
AlAs2 crystallizes in the orthorhombic Ibca space group. Al(1) is bonded to one As(1), one As(2), one As(3), and one As(4) atom to form distorted corner-sharing AlAs4 tetrahedra. The Al(1)-As(1) bond length is 2.55 Å. The Al(1)-As(2) bond length is 2.51 Å. The Al(1)-As(3) bond length is 2.49 Å. The Al(1)-As(4) bond length is 2.51 Å. There are four inequivalent As sites. In the first As site, As(1) is bonded in a distorted linear geometry to two equivalent Al(1) atoms. In the second As site, As(2) is bonded in a distorted bent 120 degrees geometry to two equivalent Al(1) atoms. In the third As site, As(3) is bonded in a distorted water-like geometry to two equivalent Al(1) atoms. In the fourth As site, As(4) is bonded in a distorted L-shaped geometry to two equivalent Al(1) atoms.