Synthesis, Crystal Structure, and Properties of the Novel 2D Cd Coordination Polymer Based on Cd4 Cluster Chains

The title complex Cd/4-(phosphonomethyl) benzoic acid 4-HOOCC6H14CH2PO3(H3BCP) with 1,10-phenanthroline has been hydrothermally synthesized directly as [Cd3(BCP)2(phen)]·H2O 1 (phen = 1,10-phenanthroline). The crystal structure was determined by single-crystal X-ray diffraction with the following data: triclinic P-1. The complex is a two-dimensional layer structure. Interestingly, the one-dimensional cluster chain is composed of the novel repeated La4 cluster units connected by two Cd3 ions. The adjacent cluster chains link to be 2D layer structure by the coordination interaction of oxygen atoms of the carboxyl with the Cd3 ions of the adjacent chains. It is worthy of mentioning that IR, photo-luminescent and solid UV–Vis spectrum are employed in order to explore the structural characteristics.