Materials Data on K2NaCo(NO2)6 by Materials Project

Abstract

K2Na(NO2)6Co crystallizes in the cubic Fm-3 space group. The structure is three-dimensional and consists of four cobalt molecules and one K2Na(NO2)6 framework. In the K2Na(NO2)6 framework, K1+ is bonded to twelve equivalent O2- atoms to form KO12 cuboctahedra that share edges with six equivalent KO12 cuboctahedra and faces with four equivalent NaO12 cuboctahedra. All K–O bond lengths are 2.98 Å. Na1+ is bonded to twelve equivalent O2- atoms to form NaO12 cuboctahedra that share faces with eight equivalent KO12 cuboctahedra. All Na–O bond lengths are 2.74 Å. N3+ is bonded in a bent 120 degrees geometry to two equivalent O2- atoms. Both N–O bond lengths are 1.25 Å. O2- is bonded in a distorted single-bond geometry to two equivalent K1+, one Na1+, and one N3+ atom.