Materials Data on AlCr2 by Materials Project

Cr2Al crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Cr is bonded in a 9-coordinate geometry to four equivalent Cr and five equivalent Al atoms. All Cr–Cr bond lengths are 2.38 Å. There are four shorter (2.63 Å) and one longer (2.73 Å) Cr–Al bond lengths. Al is bonded in a 8-coordinate geometry to ten equivalent Cr and four equivalent Al atoms. All Al–Al bond lengths are 2.96 Å.