Crystal Chemistry of Lead Oxide Hydroxide Nitrates: III. The Crystal Structure of Pb3O2(OH)(NO3)

The lead oxide hydroxide nitrate, Pb3O2(OH)(NO3), has been synthesized by hydrothermal methods. The crystal structure has been determined by single-crystal X-ray diffraction and refined to R1=0.044. The compound is orthorhombic, space group Pca21, a=14.149(2) ?, b=8.7668(12) ?, c=5.7124(8) ?, V=708.6(2) ?3, Z=4. The structure is based on [O2Pb3] chains of edge-sharing (OPb4) tetrahedra that are parallel to the c axis. The chains are linked by (OH)Pb2 dimers to [Pb3O2](OH) sheets that are parallel to (100). (NO3) triangles are parallel to the (001) plane. The Pb coordination polyhedra are strongly distorted due to the influence of lone pair electrons.