Materials Data on Rb9O2 by Materials Project
Rb9O2 crystallizes in the monoclinic P2_1/m space group. The structure is zero-dimensional and consists of two Rb9O2 clusters. there are six inequivalent Rb sites. In the first Rb site, Rb is bonded in a single-bond geometry to one O atom. The Rb–O bond length is 2.73 Å. In the second Rb site, Rb is bonded in an L-shaped geometry to two O atoms. Both Rb–O bond lengths are 2.86 Å. In the third Rb site, Rb is bonded in a single-bond geometry to one O atom. The Rb–O bond length is 2.72 Å. In the fourth Rb site, Rb is bonded in a single-bond geometry to one O atom. The Rb–O bond length is 2.74 Å. In the fifth Rb site, Rb is bonded in an L-shaped geometry to two O atoms. There are one shorter (2.82 Å) and one longer (2.85 Å) Rb–O bond lengths. In the sixth Rb site, Rb is bonded in a single-bond geometry to one O atom. The Rb–O bond length is 2.73 Å. There are two inequivalent O sites. In the first O site, O is bonded to six Rb atoms to form face-sharing ORb6 octahedra. In the second O site, O is bonded to six Rb atoms to form face-sharing ORb6 octahedra.