A study on the composition and structure of cyclic sulfoxide derivative palladium(Ⅱ) complex

摘要

The composition and structure of cyclic sulfoxide derivative Pd(Ⅱ) complex were investigated. The coordinated number was studied with slope method. The coordination number is 2 in lower acidity, but it is 3 in higher acidity. Four methods, UV (ultraviolet) spectra, FrIR (Fourier transform infrared) spectra, 1H-NMR (nuclear magnetic resonance)spectra, and 13C-NMR spectra, were used to determine the coordinated atom in complex. Pd is coordinated with O and S atom in S=O group in lower acidity media. The conversion of coordination bond appears with an increasing time. Pd is coordinated with S atom in S=O group in higher acidity media, and inter-ligand-transfer reaction occurs.