Materials Data on Sm4As3 by Materials Project
Sm4As3 crystallizes in the cubic I-43d space group. The structure is three-dimensional. Sm+2.25+ is bonded to six equivalent As3- atoms to form a mixture of distorted edge, corner, and face-sharing SmAs6 octahedra. The corner-sharing octahedra tilt angles range from 20–48°. There are three shorter (2.94 Å) and three longer (3.24 Å) Sm–As bond lengths. As3- is bonded in a 8-coordinate geometry to eight equivalent Sm+2.25+ atoms.
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