Materials Data on U3As4 by Materials Project
U3As4 crystallizes in the cubic I-43d space group. The structure is three-dimensional. U4+ is bonded to eight equivalent As3- atoms to form a mixture of distorted edge, face, and corner-sharing UAs8 hexagonal bipyramids. There are four shorter (2.90 Å) and four longer (2.98 Å) U–As bond lengths. As3- is bonded to six equivalent U4+ atoms to form a mixture of distorted edge, face, and corner-sharing AsU6 octahedra. The corner-sharing octahedra tilt angles range from 15–51°.
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