Materials Data on RbH4O3 by Materials Project
RbH4O3 crystallizes in the orthorhombic Fdd2 space group. The structure is three-dimensional. Rb is bonded in a 10-coordinate geometry to two H and eight O atoms. There are one shorter (3.07 Å) and one longer (3.09 Å) Rb–H bond lengths. There are a spread of Rb–O bond distances ranging from 3.07–3.17 Å. There are four inequivalent H sites. In the first H site, H is bonded in a single-bond geometry to two O atoms. There is one shorter (1.01 Å) and one longer (1.70 Å) H–O bond length. In the second H site, H is bonded in a distorted single-bond geometry to one Rb and two O atoms. There is one shorter (1.01 Å) and one longer (1.67 Å) H–O bond length. In the third H site, H is bonded in a distorted single-bond geometry to one Rb and two O atoms. There is one shorter (1.01 Å) and one longer (1.65 Å) H–O bond length. In the fourth H site, H is bonded in a single-bond geometry to two O atoms. There is one shorter (1.00 Å) and one longer (1.72 Å) H–O bond length. There are four inequivalent O sites. In the first O site, O is bonded in a water-like geometry to four equivalent Rb and two equivalent H atoms. In the second O site, O is bonded in a water-like geometry to four equivalent Rb and two equivalent H atoms. In the third O site, O is bonded in a water-like geometry to four equivalent Rb and two H atoms. In the fourth O site, O is bonded in a distorted rectangular see-saw-like geometry to four H atoms.