Materials Data on BaV2H2(Se2O7)2 by Materials Project
BaV2H2(Se2O7)2 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. Ba2+ is bonded in a distorted q6 geometry to ten O2- atoms. There are a spread of Ba–O bond distances ranging from 2.86–3.01 Å. V5+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of V–O bond distances ranging from 1.65–2.37 Å. H1+ is bonded in a distorted single-bond geometry to two O2- atoms. There is one shorter (1.01 Å) and one longer (1.69 Å) H–O bond length. There are two inequivalent Se+3.50+ sites. In the first Se+3.50+ site, Se+3.50+ is bonded in a distorted trigonal non-coplanar geometry to three O2- atoms. There are a spread of Se–O bond distances ranging from 1.72–1.78 Å. In the second Se+3.50+ site, Se+3.50+ is bonded in a trigonal non-coplanar geometry to three O2- atoms. There is one shorter (1.73 Å) and two longer (1.75 Å) Se–O bond length. There are seven inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Ba2+, one V5+, and one Se+3.50+ atom. In the second O2- site, O2- is bonded in a single-bond geometry to one Ba2+ and one V5+ atom. In the third O2- site, O2- is bonded in a distorted water-like geometry to one H1+ and one Se+3.50+ atom. In the fourth O2- site, O2- is bonded in a bent 120 degrees geometry to one V5+ and one Se+3.50+ atom. In the fifth O2- site, O2- is bonded in a 2-coordinate geometry to one Ba2+, one V5+, and one Se+3.50+ atom. In the sixth O2- site, O2- is bonded in a 3-coordinate geometry to one Ba2+, one V5+, and one Se+3.50+ atom. In the seventh O2- site, O2- is bonded in a 1-coordinate geometry to one Ba2+, one V5+, one H1+, and one Se+3.50+ atom.