Date Published: June 01, 2011
Publisher: International Union of Crystallography
Author(s): Lei Yang, Zhongyue Li, Guanghua Li.
The title compound, [Pb4(C8H4O4)3Cl2]n, consists of a three-dimensional inorganic–organic hybrid framework. The asymmetric unit contains two Pb2+ cations, one Cl− anion and one and a half terephthalate anions, the latter being completed by inversion symmetry. The two Pb2+ cations are each surrounded by five O atoms and one Cl atom in the form of irregular polyhedra. The cations are linked by μ2-O and μ2-Cl atoms into binuclear units, which are further extended through Pb—O interactions into an undulated inorganic layer parallel to (001). These layers are connected along  by the terephthalate groups into a three-dimensional framework.
For a description of inorganic–organic hybrid compounds, see: Cheetham et al. (2006 ▶). For Pb—Cl bond lengths, see: Casas (2003 ▶). For a related structure, see: Zhang et al. (2009 ▶).