Materials Data on Pb3(NO4)2 by Materials Project
Pb3(NO4)2 crystallizes in the orthorhombic Pnma space group. The structure is two-dimensional and consists of two Pb3(NO4)2 sheets oriented in the (0, 0, 1) direction. there are three inequivalent Pb2+ sites. In the first Pb2+ site, Pb2+ is bonded in a 2-coordinate geometry to two equivalent O2- atoms. Both Pb–O bond lengths are 2.32 Å. In the second Pb2+ site, Pb2+ is bonded in a 4-coordinate geometry to four equivalent O2- atoms. There are two shorter (2.41 Å) and two longer (2.42 Å) Pb–O bond lengths. In the third Pb2+ site, Pb2+ is bonded in a 2-coordinate geometry to seven O2- atoms. There are a spread of Pb–O bond distances ranging from 2.26–3.19 Å. There are two inequivalent N5+ sites. In the first N5+ site, N5+ is bonded in a trigonal planar geometry to three O2- atoms. There are a spread of N–O bond distances ranging from 1.25–1.31 Å. In the second N5+ site, N5+ is bonded in a trigonal planar geometry to three O2- atoms. All N–O bond lengths are 1.27 Å. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted single-bond geometry to one Pb2+ and one N5+ atom. In the second O2- site, O2- is bonded in a single-bond geometry to two equivalent Pb2+ and one N5+ atom. In the third O2- site, O2- is bonded in a distorted single-bond geometry to one Pb2+ and one N5+ atom. In the fourth O2- site, O2- is bonded in a single-bond geometry to one N5+ atom. In the fifth O2- site, O2- is bonded to four Pb2+ atoms to form a mixture of edge and corner-sharing OPb4 tetrahedra. In the sixth O2- site, O2- is bonded in a single-bond geometry to one N5+ atom.