Cadmium(II) terephthalates based on trinuclear units {Cd_3(bdc)_3}: control of coordination structure dimensionality and luminescence properties
Two metal-organic coordination polymers based on cadmium(II) ions and terephthalic (1,4-benzenedicarboxylic) acid were synthesized in dimethylformamide or a mixture of dimethylformamide and methanol: [Cd{sub 3}(bdc){sub 3}(dmf){sub 4}] (1, bdc is 1,4-benzenedicarboxylate, dmf is N,N´-dimethylformamide) and [Cd{sub 3}(bdc){sub 3}(dmf){sub 2}] (2), respectively. According to the single-crystal X-ray diffraction data, both compounds are built up by the trinuclear carboxylate units {Cd_3(O_2CR)_6}. Compound 1 has a layered structure, whereas compound 2 has a three-dimensional structure due to the presence of additional coordination interactions between adjacent trinuclear units and the formation of polymer chains {Cd_3(dmf)_2(μ_2-O_2CR-κ"1,κ"1)_2(μ_2-O_2CR-κ"2,κ"1)_4(O_2CR-κ"1)2}. The synthesized compounds were characterized by IR spectroscopy, thermogravimetric analysis, elemental analysis, and powder X-ray diffrac- tion. The luminescence properties of these compounds provide evidence for the existence of both intraligand and charge-transfer transitions. The luminescence quantum yields for both compounds are 10%.
- OSTI ID:
- 22863517
- Journal Information:
- Russian Chemical Bulletin, Vol. 66, Issue 9; Other Information: Copyright (c) 2017 Springer Science+Business Media, LLC, part of Springer Nature; http://www.springer-ny.com; Country of input: International Atomic Energy Agency (IAEA); ISSN 1066-5285
- Country of Publication:
- United States
- Language:
- English
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