Self-assembly of 1D Coordination Polymers Containing Copper(I) tert-butylthiolato Clusters: Structural Characterization and Properties

Abstract

The solvothermal reactions of copper(I) tert-butylthiolate (CuS t Bu) with 1/3 equiv. of dppe [dppe = bis(diphenylphosphino)ethane] or bix [bix = 1,4-bis(imidalzole-1-ylmethyl)benzene] in CH3CN led to the formation of two cluster-based coordination polymers [(CuS t Bu)4(dppe)] n (1) and [(CuS t Bu)6(bix)] n (2). Single-crystal X-ray diffraction studies reveal that 1 and 2 feature 1D zigzag polymeric chains which contain rare (CuS t Bu)4 or (CuS t Bu)6 clusters as connecting junctions and dppe or bix as linkers. The title compounds show optical transitions with band gaps of ∼3.18 eV for 1 and ∼2.81 eV for 2. Compounds 1 and 2 exhibit strong photoluminescence with the peaks maximum at 603 and 629 nm respectively. Two 1D zigzag polymers [(CuS t Bu)4(dppe)] n (1) and [(CuS t Bu)6(bix)] n (2) [dppe = bis(diphenylphosphino) ethane] or bix [bix = 1,4-bis(imidalzole-1-ylmethyl)benzene] have been synthesized by solvothermal reactions using copper(I) tert-butylthiolate CuS t Bu as the starting material. Compounds 1 and 2 contain rare (CuS t Bu)4 and (CuS t Bu)6 clusters as connecting nodes and dppe or bix as bridging ligands. The title compounds show optical transitions with band gaps of ∼3.18 eV for 1 and ∼2.81 eV for 2. Both 1 and 2 exhibit strong photoluminescence with the peak maximums at 603 and 629 nm, respectively.