Materials Data on KRu(NO2)4 by Materials Project
KRuN3O7NO crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional and consists of four nitroxyl molecules and one KRuN3O7 framework. In the KRuN3O7 framework, K1+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of K–O bond distances ranging from 2.78–3.26 Å. Ru5+ is bonded in a 2-coordinate geometry to two equivalent O2- atoms. There is one shorter (1.96 Å) and one longer (1.97 Å) Ru–O bond length. There are three inequivalent N+2.50+ sites. In the first N+2.50+ site, N+2.50+ is bonded in a bent 120 degrees geometry to two O2- atoms. Both N–O bond lengths are 1.24 Å. In the second N+2.50+ site, N+2.50+ is bonded in a bent 120 degrees geometry to two O2- atoms. Both N–O bond lengths are 1.24 Å. In the third N+2.50+ site, N+2.50+ is bonded in a bent 120 degrees geometry to two O2- atoms. There is one shorter (1.24 Å) and one longer (1.25 Å) N–O bond length. There are seven inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted single-bond geometry to one K1+ and one N+2.50+ atom. In the second O2- site, O2- is bonded in a distorted single-bond geometry to one K1+ and one N+2.50+ atom. In the third O2- site, O2- is bonded in a distorted single-bond geometry to one K1+ and one N+2.50+ atom. In the fourth O2- site, O2- is bonded in a single-bond geometry to one K1+ and one N+2.50+ atom. In the fifth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one K1+ and one N+2.50+ atom. In the sixth O2- site, O2- is bonded in a single-bond geometry to two equivalent K1+ and one N+2.50+ atom. In the seventh O2- site, O2- is bonded in a distorted water-like geometry to one K1+ and two equivalent Ru5+ atoms.