Materials Data on CeAs2 by Materials Project
CeAs2 is Cotunnite structured and crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. Ce4+ is bonded in a 9-coordinate geometry to nine As2- atoms. There are a spread of Ce–As bond distances ranging from 2.98–3.16 Å. There are two inequivalent As2- sites. In the first As2- site, As2- is bonded in a 5-coordinate geometry to five equivalent Ce4+ and two equivalent As2- atoms. There are one shorter (3.04 Å) and one longer (3.07 Å) As–As bond lengths. In the second As2- site, As2- is bonded in a 8-coordinate geometry to four equivalent Ce4+ and four As2- atoms. There are one shorter (2.66 Å) and one longer (2.69 Å) As–As bond lengths.
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