Cr2As crystallizes in the hexagonal P-62m space group. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded in a 5-coordinate geometry to one As(2) and four equivalent As(1) atoms. In the second Cr site, Cr(2) is bonded to two equivalent As(1) and two equivalent As(2) atoms to form a mixture of distorted corner and edge-sharing CrAs4 tetrahedra. There are two inequivalent As sites. In the first As site, As(2) is bonded in a 9-coordinate geometry to three equivalent Cr(1) and six equivalent Cr(2) atoms. In the second As site, As(1) is bonded in a 9-coordinate geometry to three equivalent Cr(2) and six equivalent Cr(1) atoms.
Cr2As crystallizes in the hexagonal P-62m space group. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded in a 5-coordinate geometry to one As(2) and four equivalent As(1) atoms. The Cr(1)-As(2) bond length is 2.56 Å. All Cr(1)-As(1) bond lengths are 2.67 Å. In the second Cr site, Cr(2) is bonded to two equivalent As(1) and two equivalent As(2) atoms to form a mixture of distorted corner and edge-sharing CrAs4 tetrahedra. Both Cr(2)-As(1) bond lengths are 2.45 Å. Both Cr(2)-As(2) bond lengths are 2.42 Å. There are two inequivalent As sites. In the first As site, As(2) is bonded in a 9-coordinate geometry to three equivalent Cr(1) and six equivalent Cr(2) atoms. In the second As site, As(1) is bonded in a 9-coordinate geometry to three equivalent Cr(2) and six equivalent Cr(1) atoms.