Publication Date:
2011-03-19
Description:
The hydrolytic ring opening reactions of pyromellitic dianhydride is an effective method to prepare transition metal carboxylate complexes. In this paper, two dinuclear complexes [Ni 2 (2,2′-bipy) 2 (btec)(H 2 O) 6 ] · 2H 2 O ( 1 ) and [Cd 2 (phen) 4 (H 2 O) 2 (H 2 btec)] · H 2 btec · 2H 2 O ( 2 ) (H 4 btec = 1,2,4,5-benzenetetracarboxylic acid, phen = 1,10-phenanthroline, and 2,2′-bipy = 2,2′-bipyridine) were synthesized by slow diffusion methods and their structures were determined byX-ray structure analysis. In both structures metal atoms are in distorted octahedral environments and they are linked by bis-monodentately coordinated 1,2,4,5-benzentetracarboxylate ligands as bridging units. The crystalline compounds, which are insoluble in water as well as common organic solvents, have been characterized in the solid-state by elemental analysis, thermogravimetric analysis, IR, and diffuse reflectance UV/Visspectroscopy. Moreover, the study of the physical properties of complex 2 demonstrates that it exhibits blue fluorescence emission in the solid state at room temperature.
Print ISSN:
0044-2313
Electronic ISSN:
1521-3749
Topics:
Chemistry and Pharmacology
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