Synthesis, Crystal Structure, Spectroscopic and Electrochemical Properties of a Copper Coordination Polymer with Unprecedented Topology.

A copper cyanide coordination polymer [Cu8(CN)8(bbtz)2] n ( 1) [bbtz = 1,4-bis(1,2,4-trizal-1-ylmethyl)benzene] was synthesized following a synchronous redox and self-assembly reaction under the solvothermal condition, and characterized by elemental analysis, infrared spectroscopy, and single-crystal X-ray diffraction. Interestingly, complex 1 exhibits a two-dimensional conjugated pillared double-layer architecture and an unprecedented (3,3,4)-connected network with the point symbol (6.7.10)2(6.72)2(62.73.10) topology. Moreover, the thermogravimetric analysis indicates complex 1 has highly thermal stability, and the solid-state emission spectrum for its crystalline material displays a strong green luminescence band ( λmax = 565 nm) at room temperature. The electrochemical behavior of complex 1 is determined by the scan rates in the range from -0.5 to +0.3 V at room temperature, and exhibits different redox processes. [ABSTRACT FROM AUTHOR]