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

A copper cyanide coordination polymer [Cug(CN)(8)(bbtz)(2)](n), (1) [bbtz = 1,4-bis(1,2,4-trizal-1-ylinethyl)benzend] 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)(6.7(2))(2)(6(2).7(3).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 (lambda(max) = 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.