Materials Data on U(NO4)2 by Materials Project

Abstract

UO2(NO3)2 crystallizes in the triclinic P-1 space group. The structure is zero-dimensional and consists of one hydrogen peroxide molecule and one U(NO3)2 cluster. In the U(NO3)2 cluster, U6+ is bonded in a square co-planar geometry to four O2- atoms. There are two shorter (1.79 Å) and two longer (2.28 Å) U–O bond lengths. N5+ is bonded in a bent 120 degrees geometry to two O2- atoms. There is one shorter (1.21 Å) and one longer (1.34 Å) N–O bond length. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a bent 120 degrees geometry to one U6+ and one N5+ atom. In the second O2- site, O2- is bonded in a single-bond geometry to one N5+ atom. In the third O2- site, O2- is bonded in a single-bond geometry to one U6+ atom.