Abstract
Three complexes, namely [Cu(dpt)2(H2O)4]·2H2O (1), [Cu3I2(dpt)] n (2) and [Cu6Br3(dpt)3] n (3), have been obtained from the reactions of different copper salts with 1H-3,5-bis(4-pyridyl)-1,2,4-triazole (Hdpt). Complex 1 is mononuclear such that the CuII atom exhibits an octahedral coordination geometry involving monodentate dpt ligands, being synthesized from CuII nitrate and Hdpt at ambient temperature, while the cuprous halide cluster-based coordination polymers 2 and 3 were prepared by solvothermal reactions of CuI or CuBr with Hdpt. Complex 2 consists of [Cu3I2] n chains, which are further connected by the μ 4-dpt bridges to form a 4,6-connected three-dimensional coordination polymer. Complex 3 is a 3,3,9-connected net based on [Cu6Br3] building blocks, linked by μ 3-dpt bridges. The photoluminescence properties of complex 2 in the solid state at ambient temperature have been investigated.
Graphical Abstract
Syntheses and structures of three complexes [Cu(dpt)2(H2O)4]·2H2O (1), [Cu3I2(dpt)] n (2) and [Cu6Br3(dpt)3] n (3) (Hdpt = 1H-3,5-bis(4-pyridyl)-1,2,4-triazole) are described, in which the effect of the rich connectivity of the cuprous halide clusters, supported by the changeable coordination modes of dpt ligand, is revealed.
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Acknowledgments
This work was supported by the National Natural Science Foundation of China (Grant No. 21407028), the Excellent Young Teacher Development Project of Universities in Guangdong Province (Grant No. 261532106) and the Guangzhou Science and Technology Program (Grant No. 201510010156).
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Hu, S., Lin, D., Xie, Z. et al. Coordinative versatility of 3,5-bis(4-pyridyl)-1,2,4-triazole in the construction of monomeric copper(II) and polymeric copper(I) complexes. Transition Met Chem 40, 623–629 (2015). https://doi.org/10.1007/s11243-015-9955-9
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DOI: https://doi.org/10.1007/s11243-015-9955-9