Synthesis, characterization, spectroscopic and electrochemical properties of trans,trans,trans-bis(triphenyl phosphine) bis(aroyl hydrazonato)ruthenium(II) complexes

摘要

Four ruthenium (II) complexes of general formula Ru(PPh3)(2)(L)(2) have been synthesized and characterized. The spectroscopic and cyclic voltammetric studies of these complexes are also reported. X-ray crystal structure determination of two of the complexes reveal that Ru(II) occupies trans, trans, trans-(t,t,t) N2O2P2 centrosymmetric octahedral environments, with the ligand pair occupying the equatorial plane. P-31 NMR confirms the presence of two trans-PPh3 groups in all the complexes. The transformation of the complexes in dichloromethane solution is studied by spectrophotometry and P-31 NMR spectroscopy. (C) 2006 Elsevier B.V. All rights reserved.