Synthesis, spectroscopic properties, structural characterization and electrochemistry of mixed ligand complexes of copper(I) halide with PPh3 and naphthylazoimidazole
作者： G. Saha , K.K. Sarkar , P. Datta , P. Raghavaiah , C. Sinha
DOI: 10.1016/J.POLY.2010.04.007
关键词:
摘要: Abstract The reaction of CuX (X = Cl, Br, I) with a mixture PPh3 and 1-alkyl-2-(naphthyl-α/β-azo)imidazole has synthesized mixed ligand complexes the composition, [Cu(α/β-NaiR)(PPh3)X]. spectroscopic characterization (IR, UV–Vis, 1H NMR) supports this formulation. single crystal X-ray diffraction study [Cu((α-NaiMe)(PPh3)I] (7a) (α-NaiMe = 1-methyl-2-(naphthyl-α-azo)imidazole) shows distorted tetrahedral geometry about Cu(I). Cyclic voltammograms show high potential Cu(II)/Cu(I) couple azo reductions. [Cu(α/β-NaiR)(PPh3)I] an additional oxidative response at 0.4 V that is assigned to I/I− A sharp anodic peak ∼−0.2 V oxidation metallic Cu, deposited on electrode surface upon scanning negative side SCE. DFT TD-DFT computations (7a), [Cu((α-NaiMe)(PPh3)I]+ (7a+) [Cu((α-NaiMe)(PPh3)I]− (7a−) were carried out examine electronic configuration explain spectral redox properties complexes.
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