Materials Data on AlCrNi by Materials Project
NiCrAl crystallizes in the orthorhombic Imma space group. The structure is three-dimensional. Cr is bonded to two equivalent Cr and four equivalent Ni atoms to form a mixture of distorted corner and edge-sharing CrCr2Ni4 cuboctahedra. Both Cr–Cr bond lengths are 2.16 Å. All Cr–Ni bond lengths are 2.45 Å. Ni is bonded in a 12-coordinate geometry to four equivalent Cr, two equivalent Ni, and four equivalent Al atoms. Both Ni–Ni bond lengths are 2.39 Å. All Ni–Al bond lengths are 2.60 Å. Al is bonded in a 4-coordinate geometry to four equivalent Ni atoms.
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