Abstract
1-Alkyl-2-(naphthyl-β-azo)imidazoles (β-NaiX, X=Me ( 3a), Et ( 3b), and CH 2Ph ( 3c)) have been synthesized and reacted with K 2PtCl 4 in boiling MeCN–water (1:1, v/v) and Pt(β-NaiX)Cl 2 ( 4) are isolated as orange–brown products. IR spectra support cis-PtCl 2 configuration and the structural configuration has been carried out by the X-ray diffraction study of Pt(β-NaiEt)Cl 2 ( 4b). The treatment of aqueous silver nitrate solution, followed by the addition of pyridine bases (Rpy) and NaClO 4 to an acetonitrile solution of Pt(β-NaiX)Cl 2 under boiling conditions has yielded [Pt(β-NaiX)(Rpy) 2](ClO 4) 2 ( 5– 7). The structure has been established by spectroscopic data (IR, UV–Vis, 1H NMR). The redox properties of the complexes exhibit azo reductions.
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