Materials Data on H7Se2NO6 by Materials Project
NH4H3(SeO3)2 crystallizes in the orthorhombic P2_12_12_1 space group. The structure is three-dimensional and consists of four ammonium molecules and one H3(SeO3)2 framework. In the H3(SeO3)2 framework, there are three inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a linear geometry to two O2- atoms. There is one shorter (1.04 Å) and one longer (1.55 Å) H–O bond length. In the second H1+ site, H1+ is bonded in a linear geometry to two O2- atoms. There is one shorter (1.03 Å) and one longer (1.57 Å) H–O bond length. In the third H1+ site, H1+ is bonded in a distorted linear geometry to two O2- atoms. There is one shorter (1.02 Å) and one longer (1.61 Å) H–O bond length. There are two inequivalent Se1+ sites. In the first Se1+ site, Se1+ is bonded in a distorted trigonal non-coplanar geometry to three O2- atoms. There is one shorter (1.69 Å) and two longer (1.79 Å) Se–O bond length. In the second Se1+ site, Se1+ is bonded in a trigonal non-coplanar geometry to three O2- atoms. There is two shorter (1.71 Å) and one longer (1.80 Å) Se–O bond length. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded in a bent 120 degrees geometry to one H1+ and one Se1+ atom. In the second O2- site, O2- is bonded in a bent 120 degrees geometry to one H1+ and one Se1+ atom. In the third O2- site, O2- is bonded in a distorted water-like geometry to one H1+ and one Se1+ atom. In the fourth O2- site, O2- is bonded in a bent 120 degrees geometry to one H1+ and one Se1+ atom. In the fifth O2- site, O2- is bonded in a distorted water-like geometry to one H1+ and one Se1+ atom. In the sixth O2- site, O2- is bonded in a distorted water-like geometry to one H1+ and one Se1+ atom.