Materials Data on Rb4CO4 by Materials Project
Rb4CO4 crystallizes in the monoclinic Cm space group. The structure is two-dimensional and consists of one Rb4CO4 sheet oriented in the (0, 0, 1) direction. there are two inequivalent Rb1+ sites. In the first Rb1+ site, Rb1+ is bonded in a 5-coordinate geometry to four O2- atoms. There are a spread of Rb–O bond distances ranging from 2.69–2.93 Å. In the second Rb1+ site, Rb1+ is bonded in a 3-coordinate geometry to three O2- atoms. There are one shorter (2.66 Å) and two longer (2.72 Å) Rb–O bond lengths. C4+ is bonded in a tetrahedral geometry to four O2- atoms. There are a spread of C–O bond distances ranging from 1.42–1.47 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted single-bond geometry to three Rb1+ and one C4+ atom. In the second O2- site, O2- is bonded in a single-bond geometry to four equivalent Rb1+ and one C4+ atom. In the third O2- site, O2- is bonded in a distorted single-bond geometry to four Rb1+ and one C4+ atom.