Materials Data on CaB2(HO4)2 by Materials Project
CaB2(HO4)2 crystallizes in the monoclinic C2/c space group. The structure is two-dimensional and consists of two CaB2(HO4)2 sheets oriented in the (1, 0, 0) direction. Ca is bonded in a 6-coordinate geometry to six O atoms. There are a spread of Ca–O bond distances ranging from 2.36–2.51 Å. B is bonded in a tetrahedral geometry to four O atoms. There are a spread of B–O bond distances ranging from 1.41–1.53 Å. H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.97 Å. There are four inequivalent O sites. In the first O site, O is bonded in a distorted single-bond geometry to one B atom. In the second O site, O is bonded in a distorted single-bond geometry to one Ca and one B atom. In the third O site, O is bonded in a distorted single-bond geometry to one Ca and one B atom. In the fourth O site, O is bonded in a 2-coordinate geometry to one Ca, one B, and one H atom.