Extended-chain, multinuclear transition metal complexes bridged by cyanodiazenido(1−), [NN–CN]−, ligands

Yun Fu Chan; Ann M. Chippindale; Howard M. Colquhoun; Michael G. B. Drew; David J. Williams

doi:10.1039/B704367H

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Extended-chain, multinuclear transition metal complexes bridged by cyanodiazenido(1−), [NN–CN]⁻, ligands†

Yun Fu Chan,^a Ann M. Chippindale,^a Howard M. Colquhoun,*^a Michael G. B. Drew^a and David J. Williams^b

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* Corresponding authors

^a Department of Chemistry, University of Reading, Whiteknights, Reading, UK
E-mail: h.m.colquhoun@rdg.ac.uk.
Fax: +44 (0)118 378 3530
Tel: +44 (0)118 378 6717

^b Department of Chemistry, Imperial College, South Kensington, London, UK

Abstract

Extended-chain complexes containing multiple transition metal centres linked by conjugated µ-cyanodiazenido(1−) ligands [N [double bond, length as m-dash] N–C [triple bond, length as m-dash] N]⁻ have been obtained by reaction of trans-[BrW(dppe)₂(N₂CN)], 1, [dppe = 1,2-bis(diphenylphosphino)ethane] with dirhodium(II) tetra-acetate, bis(benzonitrile)palladium(II) dichloride, and bis(aqua)M(II) bis(hexafluoroacetylacetonate) (M = Mn, Ni, Cu, Zn): stronger Lewis acids such as tetrakis(acetonitrile)palladium(II) tetrafluoroborate and boron trifluoride promote hydrolysis of complex 1, leading to the isolation of a novel carbamoylhydrazido(2−) complex, trans-[BrW(dppe)₂(N₂HC [double bond, length as m-dash] ONH₂)]⁺[BF₄]⁻.

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Supplementary files

Crystal structure data TXT (199K)

Article information

DOI: https://doi.org/10.1039/B704367H
Article type: Paper
Submitted: 22 Mar 2007
Accepted: 24 May 2007
First published: 04 Jul 2007

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Dalton Trans., 2007, 3538-3545

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Extended-chain, multinuclear transition metal complexes bridged by cyanodiazenido(1−), [NN–CN]⁻, ligands

Y. F. Chan, A. M. Chippindale, H. M. Colquhoun, M. G. B. Drew and D. J. Williams, Dalton Trans., 2007, 3538 DOI: 10.1039/B704367H

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Dalton Transactions