DOI: 10.17188/1653165
title: Materials Data on Ca3B5Cl2O21 by Materials Project

description: Ca3B5O19Cl2O2 crystallizes in the monoclinic Pc space group. The structure is two-dimensional and consists of two hydrogen peroxide molecules and one Ca3B5O19Cl2 sheet oriented in the (0, 1, 0) direction. In the Ca3B5O19Cl2 sheet, there are three inequivalent Ca sites. In the first Ca site, Ca is bonded in a 6-coordinate geometry to six O atoms. There are a spread of Ca–O bond distances ranging from 2.17–2.77 Å. In the second Ca site, Ca is bonded in a 7-coordinate geometry to seven O atoms. There are a spread of Ca–O bond distances ranging from 2.18–2.69 Å. In the third Ca site, Ca is bonded in a 7-coordinate geometry to seven O atoms. There are a spread of Ca–O bond distances ranging from 2.25–2.59 Å. There are five inequivalent B sites. In the first B site, B is bonded in a trigonal planar geometry to three O atoms. There are a spread of B–O bond distances ranging from 1.37–1.40 Å. In the second B site, B is bonded in a trigonal planar geometry to three O atoms. There are a spread of B–O bond distances ranging from 1.36–1.40 Å. In the third B site, B is bonded in a trigonal planar geometry to three O atoms. There are a spread of B–O bond distances ranging from 1.32–1.43 Å. In the fourth B site, B is bonded in a distorted tetrahedral geometry to four O atoms. There are a spread of B–O bond distances ranging from 1.43–1.47 Å. In the fifth B site, B is bonded in a tetrahedral geometry to four O atoms. There are a spread of B–O bond distances ranging from 1.42–1.55 Å. There are nineteen inequivalent O sites. In the first O site, O is bonded in a 2-coordinate geometry to one Ca and two B atoms. In the second O site, O is bonded in a 3-coordinate geometry to one Ca and two B atoms. In the third O site, O is bonded in a distorted trigonal planar geometry to one Ca and two B atoms. In the fourth O site, O is bonded in a 3-coordinate geometry to one Ca and two B atoms. In the fifth O site, O is bonded in a 2-coordinate geometry to one Ca and two B atoms. In the sixth O site, O is bonded in a 2-coordinate geometry to one Ca and two B atoms. In the seventh O site, O is bonded in a 3-coordinate geometry to two Ca and one B atom. In the eighth O site, O is bonded in a distorted single-bond geometry to one Ca and one B atom. In the ninth O site, O is bonded in a distorted single-bond geometry to two Ca and one B atom. In the tenth O site, O is bonded in a distorted single-bond geometry to one Ca and one B atom. In the eleventh O site, O is bonded in a distorted water-like geometry to one Ca and one B atom. In the twelfth O site, O is bonded in a trigonal planar geometry to three Ca atoms. In the thirteenth O site, O is bonded in a bent 120 degrees geometry to one O and one Cl atom. The O–O bond length is 1.27 Å. The O–Cl bond length is 1.89 Å. In the fourteenth O site, O is bonded in a bent 150 degrees geometry to one Ca and one O atom. In the fifteenth O site, O is bonded in an L-shaped geometry to one Ca and one O atom. The O–O bond length is 1.32 Å. In the sixteenth O site, O is bonded in a single-bond geometry to one Cl atom. The O–Cl bond length is 1.51 Å. In the seventeenth O site, O is bonded in a bent 150 degrees geometry to one Ca and one Cl atom. The O–Cl bond length is 1.53 Å. In the eighteenth O site, O is bonded in a water-like geometry to one Ca and one O atom. The O–O bond length is 1.32 Å. In the nineteenth O site, O is bonded in a bent 120 degrees geometry to two O atoms. There are two inequivalent Cl sites. In the first Cl site, Cl is bonded in a single-bond geometry to one O atom. In the second Cl site, Cl is bonded in a bent 120 degrees geometry to two O atoms.