Materials Data on U2(Al3Co)3 by Materials Project

Abstract

U2Co3Al9 crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. U is bonded in a 11-coordinate geometry to eleven Al atoms. There are a spread of U–Al bond distances ranging from 2.97–3.10 Å. There are two inequivalent Co sites. In the first Co site, Co is bonded in a 8-coordinate geometry to eight Al atoms. There are four shorter (2.48 Å) and four longer (2.59 Å) Co–Al bond lengths. In the second Co site, Co is bonded in a 12-coordinate geometry to eight Al atoms. There are a spread of Co–Al bond distances ranging from 2.49–2.59 Å. There are four inequivalent Al sites. In the first Al site, Al is bonded in a 3-coordinate geometry to two equivalent U and three Co atoms. In the second Al site, Al is bonded in a 3-coordinate geometry to three equivalent U and three Co atoms. In the third Al site, Al is bonded in a 2-coordinate geometry to two equivalent U and two equivalent Co atoms. In the fourth Al site, Al is bonded in a 2-coordinate geometry to two equivalent U and two equivalent Co atoms.