Materials Data on YAl4Ni by Materials Project

Abstract

YNiAl4 crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. Y is bonded in a 11-coordinate geometry to two equivalent Ni and thirteen Al atoms. Both Y–Ni bond lengths are 3.16 Å. There are a spread of Y–Al bond distances ranging from 2.99–3.37 Å. Ni is bonded in a 7-coordinate geometry to two equivalent Y and seven Al atoms. There are a spread of Ni–Al bond distances ranging from 2.32–2.48 Å. There are three inequivalent Al sites. In the first Al site, Al is bonded in a 3-coordinate geometry to three equivalent Y, three equivalent Ni, and one Al atom. The Al–Al bond length is 2.94 Å. In the second Al site, Al is bonded in a distorted q6 geometry to four equivalent Y and six Al atoms. All Al–Al bond lengths are 2.87 Å. In the third Al site, Al is bonded in a 1-coordinate geometry to three equivalent Y, one Ni, and four equivalent Al atoms.