ABSTRACT
A one-dimensional chained indium phosphate In(H2PO4)(HPO4)(C10N2H8) (1) was synthesized under hydrothermal condition using 2,2′-bipyridine as a ligand and characterized by IR spectroscopy, ICP and elemental analyses, powder and single crystal X-ray diffraction analyses. Compound 1 crystallizes in the triclinic system, space group P-1. The connection of In-centered octahedra (InO4N2) and P-centered tetrahedra ({PO3(OH)} and {PO2(OH)2}) constructs a new type of 1D chained structure with In/P ratio of 1/3. Interestingly, H2PO4 tetrahedron and 2,2′-bipyridine ligands "hanging" in the chain by bridging oxygen atoms and nitrogen atoms bond to the central In atoms. It is noted that the adjacent chains are stably packed together and the final structure exhibits interesting three-dimensional (3D) supramolecular array via π–π interactions of the 2,2′-bipyridine groups and hydrogen-bond interactions. Additionally, compound 1 shows strong photoluminescence property in the solid state at room temperature.
Acknowledgments
We thank National Natural Science Foundation of China (No. 21201095) and the Opening Project of Guangxi Colleges and Universities Key Laboratory of Beibu Gulf Oil and Natural Gas Resource Effective Utilization (No.2016KLOG12) for financial support.