Materials Data on Co2As by Materials Project
Co2As crystallizes in the hexagonal P-6m2 space group. The structure is three-dimensional. there are two inequivalent Co+1.50+ sites. In the first Co+1.50+ site, Co+1.50+ is bonded in a 6-coordinate geometry to six equivalent As3- atoms. All Co–As bond lengths are 2.65 Å. In the second Co+1.50+ site, Co+1.50+ is bonded in a trigonal planar geometry to three equivalent As3- atoms. All Co–As bond lengths are 2.26 Å. As3- is bonded in a 3-coordinate geometry to nine Co+1.50+ atoms.
36 MATERIALS SCIENCE↗