Full Length Research Paper
Abstract
Reaction of [Pd(PPh3)2Cl2/Br2] with AgOTf in dichloromethane followed by addition of ligand leads to [Pd(PPh3)2(OSO2CF3)2] and then [Pd(PPh3)2(RaaiR)](OSO2CF3)2 [RaaiR/ = p-R-C6H4-N=N-C3H2-NN-1-R/, (1-3), abbreviated as N,N/-chelator, where N(imidazole) and N(azo) represent N and N/, respectively; R = H (a), Me (b), Cl (c) and R/ = Me (1), CH2CH3 (2), CH2Ph (3), OSO2CF3 is the triflate anion]. 31P {1H} NMR confirm that due to the two phosphorus atoms interaction in the azoimine environment resulting sharp peaks. The 1H NMR spectral measurements suggest chelating proton with lot of phenyl protons in the aromatic region. In the 1H-1H COSY spectrum of the present complexes and contour peaks in the 1H-13C HMQC spectrum, assign the solution structure in each complexes.
Key words: Palladium (II), arylazoimidazole, 1H 13C(1H), 31P(1H), 1H -1H COSY,1H- 13C HMQC NMR, ESI mass, IR spectra, electrochemistry.
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