Examining the binding mechanism of 3, 4-dihydro-3-(2-oxo-2-phenylethylidene)-quinoxalin-2 (1H)-one and its fragments to Cu2+

…, B Cohen, YD Liu, CC Zeng, AI Shames…

Index: Korin, Efrat; Cohen, Beny; Liu, Yong-Dong; Zeng, Cheng-Chu; Shames, Alexander I.; Becker, James Y. Journal of Coordination Chemistry, 2013 , vol. 66, # 13 p. 2351 - 2366

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Abstract

The structure and stoichiometries of the complexes that could be formed between Cu2+ and 3, 4-dihydro-3-(2-oxo-2-phenylethylidene)-quinoxalin-2 (1H)-one (1) were investigated by various spectral techniques such as IR, fluorescence, UV–vis and electron paramagnetic resonance. The results suggest that initially 3: 1 and 2: 1 (1/Cu2+) complexes are formed at low Cu2+ concentration and upon adding more Cu2+, 1: 1 (preferred) and 1: 2 complexes ...

~87%

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