Materials Data on Ce(N4O9)2 by Materials Project
Ce(NO3)6N2 crystallizes in the monoclinic P2_1/c space group. The structure is zero-dimensional and consists of four ammonia molecules and two Ce(NO3)6 clusters. In each Ce(NO3)6 cluster, Ce4+ is bonded in a cuboctahedral geometry to twelve O2- atoms. There are a spread of Ce–O bond distances ranging from 2.57–2.62 Å. There are three inequivalent N4+ sites. In the first N4+ site, N4+ is bonded in a trigonal planar geometry to three O2- atoms. There is one shorter (1.23 Å) and two longer (1.28 Å) N–O bond length. In the second N4+ site, N4+ is bonded in a trigonal planar geometry to three O2- atoms. There is one shorter (1.23 Å) and two longer (1.28 Å) N–O bond length. In the third N4+ site, N4+ is bonded in a trigonal planar geometry to three O2- atoms. There is one shorter (1.24 Å) and two longer (1.27 Å) N–O bond length. There are nine inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted single-bond geometry to one Ce4+ and one N4+ atom. In the second O2- site, O2- is bonded in a single-bond geometry to one N4+ atom. In the third O2- site, O2- is bonded in a distorted single-bond geometry to one Ce4+ and one N4+ atom. In the fourth O2- site, O2- is bonded in a distorted single-bond geometry to one Ce4+ and one N4+ atom. In the fifth O2- site, O2- is bonded in a distorted single-bond geometry to one Ce4+ and one N4+ atom. In the sixth O2- site, O2- is bonded in a single-bond geometry to one N4+ atom. In the seventh O2- site, O2- is bonded in a distorted single-bond geometry to one Ce4+ and one N4+ atom. In the eighth O2- site, O2- is bonded in a single-bond geometry to one N4+ atom. In the ninth O2- site, O2- is bonded in a distorted single-bond geometry to one Ce4+ and one N4+ atom.