Materials Data on K2HS2NO6 by Materials Project
(KSO3)2NH crystallizes in the monoclinic C2/c space group. The structure is three-dimensional and consists of four ammonia molecules and one KSO3 framework. In the KSO3 framework, K1+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of K–O bond distances ranging from 2.76–3.32 Å. S2+ is bonded in a trigonal non-coplanar geometry to three O2- atoms. There is one shorter (1.46 Å) and two longer (1.47 Å) S–O bond length. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted single-bond geometry to three equivalent K1+ and one S2+ atom. In the second O2- site, O2- is bonded in a distorted single-bond geometry to three equivalent K1+ and one S2+ atom. In the third O2- site, O2- is bonded in a single-bond geometry to three equivalent K1+ and one S2+ atom.