Materials Data on MnHSeO4 by Materials Project
MnHSeO4 crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. Mn3+ is bonded to two equivalent H1+ and four O2- atoms to form MnH2O4 octahedra that share corners with two equivalent MnH2O4 octahedra and corners with four equivalent SeO4 tetrahedra. The corner-sharing octahedral tilt angles are 34°. Both Mn–H bond lengths are 1.78 Å. There are two shorter (1.99 Å) and two longer (2.13 Å) Mn–O bond lengths. H1+ is bonded in a bent 150 degrees geometry to two equivalent Mn3+ atoms. Se4+ is bonded to four O2- atoms to form SeO4 tetrahedra that share corners with four equivalent MnH2O4 octahedra. The corner-sharing octahedra tilt angles range from 40–54°. There is two shorter (1.66 Å) and two longer (1.69 Å) Se–O bond length. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a bent 150 degrees geometry to one Mn3+ and one Se4+ atom. In the second O2- site, O2- is bonded in a bent 120 degrees geometry to one Mn3+ and one Se4+ atom.