Materials Data on Rb2Sn(H2N)6 by Materials Project
Rb2Sn(NH2)6 crystallizes in the trigonal P-3 space group. The structure is two-dimensional and consists of one Rb2Sn(NH2)6 sheet oriented in the (0, 0, 1) direction. Rb1+ is bonded in a 9-coordinate geometry to three equivalent N3- and six equivalent H1+ atoms. All Rb–N bond lengths are 2.99 Å. There are three shorter (2.86 Å) and three longer (3.04 Å) Rb–H bond lengths. Sn4+ is bonded in an octahedral geometry to six equivalent N3- atoms. All Sn–N bond lengths are 2.22 Å. N3- is bonded in a distorted water-like geometry to one Rb1+, one Sn4+, and two H1+ atoms. Both N–H bond lengths are 1.03 Å. There are two inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to two equivalent Rb1+ and one N3- atom. In the second H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom.