Abstract
Two new cadmium thiolato-carboxylate complexes, [Cd2(mba)2(2,2′-bpy)2] (1), [Cd2(dtba)2(2,2′-bpy)4]·4H2O (2) (H2mba = 2-mercaptobenzoic acid, H2dtba = 2,2′-dithiodibenzoic acid, 2,2′-bpy = 2,2′-bipyridine) were obtained by reacting Cd(II) salts and the ligands of H2mba and 2,2′-bpy, and were characterized by the single-crystal X-ray diffraction, IR, 2D-COS IR, solid UV, TG and XRD. In complex 2, the H2dtba ligand came from the in situ S–S function reaction of H2mba under the hydrothermal conditions. Complexes 1 and 2 are both 1D chains, but the difference lies in the linkage of the ligands. The 3D super-molecular frameworks of 1 and 2 are produced by π–π stacking interaction between the 2,2′-bpy ligands and the hydrogen bonds of O–H…O with ths-type and dia-type topology, respectively. The fluorescent emissions are observed in 1 and 2 with λ em = 533 nm and λ em = 436 nm, due to the ligand-to-metal charge transfer (LMCT) and π* → π transitions, respectively.
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Acknowledgments
This research work was supported by National Natural Science Foundation of China (No. 21003020), Doctoral Fund of Ministry of Education of China (Grant No. 20093514120002), and the Foundation of State Key Laboratory of Structural Chemistry (project no. 20130012).
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Supplementary data CCDC 875829 and 875830 for complexes 1 and 2 have contained the supplementary Crystallographic details. These data can be obtained free of charge at www.ccdc.cam.ac.uk/conts/retrieving.html. (DOC 3502 kb)
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Ge, SZ., Liu, Q., Deng, S. et al. Two New Luminescent Cadmium Thiolato-carboxylates with 2,2′-Bipyridine. J Inorg Organomet Polym 23, 571–578 (2013). https://doi.org/10.1007/s10904-012-9814-5
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DOI: https://doi.org/10.1007/s10904-012-9814-5