Materials Data on Rb3As by Materials Project
Rb3As is Sodium arsenide structured and crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. there are two inequivalent Rb1+ sites. In the first Rb1+ site, Rb1+ is bonded in a distorted single-bond geometry to four equivalent As3- atoms. There are one shorter (3.58 Å) and three longer (4.03 Å) Rb–As bond lengths. In the second Rb1+ site, Rb1+ is bonded in a trigonal planar geometry to three equivalent As3- atoms. All Rb–As bond lengths are 3.57 Å. As3- is bonded to eleven Rb1+ atoms to form a mixture of distorted edge and face-sharing AsRb11 trigonal bipyramids.
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