Materials Data on Ni(NO2)4 by Materials Project

Ni(NO2)4 crystallizes in the monoclinic C2/c space group. The structure is two-dimensional and consists of two Ni(NO2)4 sheets oriented in the (1, 0, 0) direction. Ni4+ is bonded in an octahedral geometry to six O2- atoms. There are a spread of Ni–O bond distances ranging from 2.03–2.13 Å. There are two inequivalent N3+ sites. In the first N3+ site, N3+ is bonded in a bent 120 degrees geometry to two O2- atoms. There is one shorter (1.25 Å) and one longer (1.26 Å) N–O bond length. In the second N3+ site, N3+ is bonded in a bent 120 degrees geometry to two O2- atoms. There is one shorter (1.21 Å) and one longer (1.26 Å) N–O bond length. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a bent 120 degrees geometry to one Ni4+ and one N3+ atom. In the second O2- site, O2- is bonded in a bent 120 degrees geometry to one Ni4+ and one N3+ atom. In the third O2- site, O2- is bonded in a single-bond geometry to one N3+ atom. In the fourth O2- site, O2- is bonded in a bent 120 degrees geometry to one Ni4+ and one N3+ atom.