Materials Data on TlB2O5 by Materials Project

Abstract

(Tl(BO2)2)2O2 crystallizes in the orthorhombic P2_12_12_1 space group. The structure is three-dimensional and consists of four hydrogen peroxide molecules and one Tl(BO2)2 framework. In the Tl(BO2)2 framework, there are two inequivalent Tl sites. In the first Tl site, Tl is bonded in a 4-coordinate geometry to five O atoms. There are a spread of Tl–O bond distances ranging from 2.07–2.78 Å. In the second Tl site, Tl is bonded in a 3-coordinate geometry to three O atoms. There are a spread of Tl–O bond distances ranging from 2.58–2.74 Å. There are four inequivalent B sites. In the first B site, B is bonded to four O atoms to form corner-sharing BO4 tetrahedra. There are a spread of B–O bond distances ranging from 1.46–1.51 Å. In the second B site, B is bonded to four O atoms to form corner-sharing BO4 tetrahedra. There are a spread of B–O bond distances ranging from 1.45–1.51 Å. In the third B site, B is bonded in a trigonal planar geometry to three O atoms. There is two shorter (1.37 Å) and one longer (1.40 Å) B–O bond length. In the fourth 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 1.37–1.39 Å. There are eight inequivalent O sites. In the first O site, O is bonded in a bent 120 degrees geometry to two B atoms. In the second O site, O is bonded in a 2-coordinate geometry to two Tl and two B atoms. In the third O site, O is bonded in a bent 120 degrees geometry to two B atoms. In the fourth O site, O is bonded in a bent 120 degrees geometry to one Tl and two B atoms. In the fifth O site, O is bonded in a 2-coordinate geometry to two Tl and one B atom. In the sixth O site, O is bonded in a distorted bent 120 degrees geometry to one Tl and one B atom. In the seventh O site, O is bonded in a distorted bent 120 degrees geometry to two Tl and two B atoms. In the eighth O site, O is bonded in a bent 120 degrees geometry to two B atoms.