Synthesis and unexpected reactivity of Ru(eta(6)-cymene)Cl-2(PPh2Cl)], leading to Ru(eta(6)-cymene)Cl-2(PPh2H)] and Ru(eta(6)-cymene)Cl-2(PPh2OH)] complexes

Pandiakumar, Arun Kumar and Samuelson, Ashoka G (2015) Synthesis and unexpected reactivity of Ru(eta(6)-cymene)Cl-2(PPh2Cl)], leading to Ru(eta(6)-cymene)Cl-2(PPh2H)] and Ru(eta(6)-cymene)Cl-2(PPh2OH)] complexes. In: JOURNAL OF CHEMICAL SCIENCES, 127 (8). pp. 1329-1338.

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Abstract

The reaction of Ru(eta(6)-cymene)Cl-2](2) and PPh2Cl in the ratio 1:2 gives a stable Ru(h(6)-cymene) Cl-2(PPh2Cl)] complex. Attempts to make the cationic Ru(eta(6)-cymene)Cl(PPh2Cl)(2)]Cl with excess PPh2Cl and higher temperatures led to adventitious hydrolysis and formation of Ru(eta(6)-cymene)Cl-2(PPh2OH)]. Attempts to make a phosphinite complex by reacting Ru(eta(6)-cymene)Cl-2](2) with PPh2Cl in the presence of an alcohol results in the reduction of PPh2Cl to give Ru(eta(6)-cymene)Cl-2(PPh2H)] and the expected phosphinite. The yield of the hydride complex is highest when the alcohol is 1-phenyl-ethane-1,2-diol. All three half-sandwich complexes are characterized by X-ray crystallography. Surprisingly, the conversion of chlorodiphenylphosphine to diphenylphosphine is mediated by 1-phenyl-ethane-1,2-diol even in the absence of the ruthenium half-sandwich precursor.

Item Type:	Journal Article
Publication:	JOURNAL OF CHEMICAL SCIENCES
Publisher:	INDIAN ACAD SCIENCES
Additional Information:	Copy right for this article belongs to the INDIAN ACAD SCIENCES, C V RAMAN AVENUE, SADASHIVANAGAR, P B #8005, BANGALORE 560 080, INDIA
Keywords:	1-Phenylethane-1,2-diol; chlorodiphenylphosphine; diphenylphosphine; diphenylphosphinous acid; half sandwich ruthenium complexes
Department/Centre:	Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited:	03 Dec 2015 04:50
Last Modified:	03 Dec 2015 04:50
URI:	http://eprints.iisc.ac.in/id/eprint/52852

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