Materials Data on Sr5As3 by Materials Project
Sr5As3 crystallizes in the hexagonal P6_3/mcm space group. The structure is three-dimensional. there are two inequivalent Sr sites. In the first Sr site, Sr is bonded in a distorted T-shaped geometry to three equivalent As atoms. There are two shorter (3.11 Å) and one longer (3.20 Å) Sr–As bond lengths. In the second Sr site, Sr is bonded to six equivalent As atoms to form a mixture of distorted corner, edge, and face-sharing SrAs6 octahedra. The corner-sharing octahedral tilt angles are 34°. All Sr–As bond lengths are 3.34 Å. As is bonded in a 7-coordinate geometry to seven Sr atoms.
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