Materials Data on Ba2MnV2HO9 by Materials Project
Ba2V2MnHO9 crystallizes in the monoclinic P2_1/m space group. The structure is three-dimensional. there are two inequivalent Ba2+ sites. In the first Ba2+ site, Ba2+ is bonded in a 11-coordinate geometry to eleven O2- atoms. There are a spread of Ba–O bond distances ranging from 2.74–3.24 Å. In the second Ba2+ site, Ba2+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Ba–O bond distances ranging from 2.72–3.16 Å. There are two inequivalent V5+ sites. In the first V5+ site, V5+ is bonded to four O2- atoms to form VO4 tetrahedra that share corners with two equivalent MnO6 octahedra. The corner-sharing octahedral tilt angles are 56°. There are a spread of V–O bond distances ranging from 1.69–1.80 Å. In the second V5+ site, V5+ is bonded to four O2- atoms to form VO4 tetrahedra that share corners with two equivalent MnO6 octahedra. The corner-sharing octahedral tilt angles are 48°. There are a spread of V–O bond distances ranging from 1.73–1.79 Å. Mn3+ is bonded to six O2- atoms to form MnO6 octahedra that share corners with four VO4 tetrahedra and edges with two equivalent MnO6 octahedra. There are a spread of Mn–O bond distances ranging from 1.96–2.24 Å. H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 1.01 Å. There are seven inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 120 degrees geometry to two Ba2+, one V5+, and one Mn3+ atom. In the second O2- site, O2- is bonded in a distorted single-bond geometry to three Ba2+ and one V5+ atom. In the third O2- site, O2- is bonded in a 4-coordinate geometry to one Ba2+, one V5+, and two equivalent Mn3+ atoms. In the fourth O2- site, O2- is bonded in a distorted single-bond geometry to four Ba2+ and one V5+ atom. In the fifth O2- site, O2- is bonded in a 1-coordinate geometry to one Ba2+, two equivalent Mn3+, and one H1+ atom. In the sixth O2- site, O2- is bonded in a distorted single-bond geometry to two Ba2+ and one V5+ atom. In the seventh O2- site, O2- is bonded in a distorted single-bond geometry to one Ba2+ and one V5+ atom.