KUMARI , N and SHARMA , M and CHUTIA , P and DUTTA , D K (2004) Oxidative addition reaction of rhodium(I) carbonyl complexes of the pyridine-aldehyde ligands and their catalytic activity in carbonylation reaction. J Molecular Catalysis.A, 222 (1-2). pp. 53-58.

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Abstract

Rhodium(I) carbonyl complexes [Rh(CO)2ClL] (1) where L = Py-2-CHO (a), Py-3-CHO (b) and Py-4-CHO (c) have been synthesized and characterized by elemental analyses, IR, 1H and 13C NMR spectroscopy. The complexes 1 undergo oxidative addition reactions with different types of electrophiles such as CH3I, C2H5I, C6H5CH2Cl and I2 to yield [Rh(CO)(COCH3)ClIL] (2), [Rh(CO)(COC2H5)ClIL] (3), [Rh(CO)(COCH2C6H5)Cl2L] (4) and [Rh(CO)ClI2L] (5) complexes, respectively. The kinetic study of the complexes1 with CH3I reveals a two-stage kinetics and the second-stage reactions are faster than that of the first stage by about 80–100 times. The rate of reaction of 1a is higherthanthatof1band1c.Thecatalyticactivityofcomplexes1incarbonylationofmethanol,ingeneral,ishigher(TON800–1250)than that of the well-known species [Rh(CO)2I2]− (TON 650).

Item Type:	Article
Subjects:	Chemistry > Material Science
Divisions:	UNSPECIFIED
Depositing User:	Dr. PK Barooah
Date Deposited:	05 Jan 2012 11:18
Last Modified:	05 Jan 2012 11:18
URI:	http://neist.csircentral.net/id/eprint/312

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