Materials Data on CuSe2O5 by Materials Project
CuSe2O5 crystallizes in the monoclinic C2/c space group. The structure is one-dimensional and consists of two CuSe2O5 ribbons oriented in the (0, 0, 1) direction. Cu2+ is bonded in a square co-planar geometry to four O2- atoms. All Cu–O bond lengths are 1.96 Å. Se4+ is bonded in a trigonal non-coplanar geometry to three O2- atoms. There are a spread of Se–O bond distances ranging from 1.70–1.86 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Cu2+ and one Se4+ atom. In the second O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Cu2+ and one Se4+ atom. In the third O2- site, O2- is bonded in a bent 120 degrees geometry to two equivalent Se4+ atoms.