Materials Data on Cs2NiAs2 by Materials Project

Abstract

Cs2NiAs2 crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. there are two inequivalent Cs1+ sites. In the first Cs1+ site, Cs1+ is bonded in a 6-coordinate geometry to six equivalent As2- atoms. There are four shorter (3.75 Å) and two longer (3.85 Å) Cs–As bond lengths. In the second Cs1+ site, Cs1+ is bonded in a 2-coordinate geometry to six equivalent As2- atoms. There are two shorter (3.59 Å) and four longer (3.95 Å) Cs–As bond lengths. Ni2+ is bonded in a distorted rectangular see-saw-like geometry to four equivalent As2- atoms. All Ni–As bond lengths are 2.37 Å. As2- is bonded in a 2-coordinate geometry to six Cs1+, two equivalent Ni2+, and one As2- atom. The As–As bond length is 2.43 Å.