Materials Data on U(N2O7)2 by Materials Project

Abstract

U(NO6)2(NO)2 crystallizes in the monoclinic P2_1/c space group. The structure is zero-dimensional and consists of four nitroxyl molecules and two U(NO6)2 clusters. In each U(NO6)2 cluster, U is bonded in a distorted octahedral geometry to six O atoms. There are a spread of U–O bond distances ranging from 1.81–2.53 Å. N is bonded in a water-like geometry to two O atoms. There is one shorter (1.19 Å) and one longer (1.49 Å) N–O bond length. There are six inequivalent O sites. In the first O site, O is bonded in a single-bond geometry to one U atom. In the second O site, O is bonded in a bent 120 degrees geometry to one U and one O atom. The O–O bond length is 1.27 Å. In the third O site, O is bonded in a distorted bent 120 degrees geometry to one U and one O atom. The O–O bond length is 1.40 Å. In the fourth O site, O is bonded in a single-bond geometry to one N atom. In the fifth O site, O is bonded in a distorted water-like geometry to one N and one O atom. In the sixth O site, O is bonded in a single-bond geometry to one O atom.