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Chemistry of dihydrogen complexes containing only phosphorus co-ligands

Jagirdar, Balajir and Nisha, Mathew (2002) Chemistry of dihydrogen complexes containing only phosphorus co-ligands. In: Proceedings of the Indian Academy of Sciences - Chemical Sciences, 114 (4). pp. 285-289.

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Abstract

A series of new dicationic dihydrogen complexes of ruthenium of the type cis-[(dppm)(2)Ru(eta(2)-H-2)(L)][BF4](2) (dppm = Ph2PCH2PPh2; L = phosphite) have been prepared by protonating the precursor hydride complexes cis-[(dPPM)(2)Ru(H)(L)][BF4] using HBF4.Et2O. The precursor hydride complexes have been obtained from trans-[(dppm)(2)Ru(H)(L)][BF4][(L = phospfiite) via a rare acid-catalysed isomerization reaction in six coordinate species. The trans-[(dppm)(2)Ru(H)(L)][BF4] complexes (L = phosphine) upon protonation gave the isomerized derivatives, however, further addition of acid resulted in a five-coordinate species, [(dppm)(2)RuCl](+) presumably via an intermediate phosphine dihydrogen complex. The electronic as well as the steric properties of the co-ligands seem to strongly influence the structure-reactivity behaviour of this series of complexes.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Indian Academy of Sciences.
Keywords: Hydrogen;hydride ligands;NMR spectroscopy;ruthenium.
Department/Centre: Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited: 22 Jul 2011 10:04
Last Modified: 22 Jul 2011 10:04
URI: http://eprints.iisc.ernet.in/id/eprint/39041

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