Amino acid template-synthesis and characterization of three-dimensional metal phosphate/phosphite networks

In this contribution, two novel metal phosphate/phosphate, namely [Zn2(HPO3)2(H2O)4]·H2O (1) and Cd5(HPO4)2(PO4)2(H2O)4 (2), were obtained by amino acid template-synthesis under mild hydrothermal conditions. X-ray crystallographic studies show that the inorganic network of 1 contains binuclear zinc building units with large 16-ring channels along [1 0 0] directions. The structure of 2 consists of asymmetric pentanuclear chiral motifs. It is notable that two centered pentanuclear cadmium structure motifs form a mesomeric unit, which is linked by bridging oxygen atoms to construct 3D inorganic network.

Graphical abstractZinc and cadmium phosphate/phosphite were synthesized and the X-ray single structure analyses showed the inorganic networks contain binuclear zinc building units with 16-ring channels and two centered pentanuclear cadmium motifs, respectively.Figure optionsDownload full-size imageDownload as PowerPoint slide