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Amidinato- and triazenido-bridged binuclear complexes of palladium and platinum

Singhal, Anshu and Jain, Vimal K and Nethaji, Munirathinam and Samuelson, Ashoka G and Jayaprakash, D and Butcher, Ray J (1998) Amidinato- and triazenido-bridged binuclear complexes of palladium and platinum. In: Polyhedron, 17 (20). pp. 3531-3540.

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Abstract

The reaction of [M2Cl2(mu-Cl)(2)(PR3)(2)] (M=Pd or Pt; PR3=PEt3, PBu3, PMe2Ph, PMePh2) with lithium amidinate or sodium triazenide gave binuclear complexes containing amidinato- or triazenido-bridges, [M2Cl2(mu-ArNENAr)(2)(PR3)(2)] (E=CH, CMe or N). These complexes were characterized by elemental analysis and NMR (H-1, P-31 or Pt-195) data. The structures of two complexes, [(PdCl2)-Cl-2(mu-PhNC(Me)NPh)(2)(PMe2Ph)(2)] (10) and [Pt2Cl2(mu-PhNNNPh)(2)(PEt3)(2)] (11) were established by single crystal X-ray structural analyses. The Pt-195 NMR data Show coupling between two metal centers in the cis triazenido-bridged complex. The corresponding amidinate bridged complex does not show coupling. The role of the bridging ligand in mediating interaction between the metal centers is probed through Extended Huckel Theory (EHT) calculations. It is suggested that M-M interactions are primarily affected by the bridging ligands

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Elsevier.
Keywords: palladium;platinum;amidine;triazene;x-ray structure;Extended Huckel Theory.
Department/Centre: Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited: 27 Feb 2009 05:48
Last Modified: 19 Sep 2010 05:27
URI: http://eprints.iisc.ernet.in/id/eprint/19256

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