Materials Data on B2TeO5 by Materials Project
B2TeO5 crystallizes in the monoclinic C2/c space group. The structure is two-dimensional and consists of two B2TeO5 sheets oriented in the (1, 0, 0) direction. there are two inequivalent B3+ sites. In the first B3+ site, B3+ is bonded in a trigonal planar geometry to three O2- atoms. There are a spread of B–O bond distances ranging from 1.36–1.41 Å. In the second B3+ site, B3+ is bonded in a trigonal planar geometry to three O2- atoms. There are a spread of B–O bond distances ranging from 1.37–1.40 Å. Te4+ is bonded in a distorted rectangular see-saw-like geometry to four O2- atoms. There are a spread of Te–O bond distances ranging from 1.95–2.07 Å. There are five inequivalent O2- sites. In the first O2- site, O2- is bonded in a 2-coordinate geometry to one B3+ and one Te4+ atom. In the second O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one B3+ and one Te4+ atom. In the third O2- site, O2- is bonded in a bent 120 degrees geometry to one B3+ and one Te4+ atom. In the fourth O2- site, O2- is bonded in a bent 120 degrees geometry to one B3+ and one Te4+ atom. In the fifth O2- site, O2- is bonded in a bent 120 degrees geometry to two B3+ atoms.