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Coordination geometries for palladium and platinum: theoretical studies and the synthesis and structure of tris(indazol-1-yl)borate complexes MMe3{(ind)3BH}

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Canty, AJ and Dedieu, A and Jin, H and Milet, A and Skelton, BW and Trofimenko, S and White, AH (1999) Coordination geometries for palladium and platinum: theoretical studies and the synthesis and structure of tris(indazol-1-yl)borate complexes MMe3{(ind)3BH}. Inorganica Chimica Acta, 287 (1). pp. 27-36. ISSN 0020-1693

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Abstract

The tris(indazol-1-yl)borate complexes PdMe3{(ind)3BH} (2a) and PtMe3{(ind)3BH}.0.5CH2Cl2 (2b) are obtained on reaction of PdMe2(tmeda) (tmeda = N,N,N',N'-tetramethylethylenediamine) or [PtMe2(SEt2)]2 with Tl[(ind)3BH], respectively, followed by addition of iodomethane. X-ray structural studies of these complexes, together with theoretical calculation at the SCF level of geometries for these complexes and [MMe3{(pz)3CH}]+ using [(H2C=N–NH)3BH]-as a model for [(ind)3BH]- and (H2C=N–NH)3CH as a model for tris(pyrazol-1-yl)methane, respectively, are reported. The theoretical studies model the trends in coordination geometry determined crystallographically on going from Pd to Pt and from [(ind)3BH]- to (pz)3CH as ligands, in particular M–N is longer and the 'N···N' ‘bite’ is larger for palladium than platinum complexes, and the 'N···N' ‘bite’ is larger for the borate complexes. Calculations at the SCF level indicate that [(pz)3BH]- has a larger intrinsic ‘bite’ than isoelectronic (pz)3CH.

Item Type: Article
Journal or Publication Title: Inorganica Chimica Acta
Page Range: pp. 27-36
ISSN: 0020-1693
Identification Number - DOI: 10.1016/S0020-1693(98)00402-2
Additional Information: The definitive version is available at http://www.sciencedirect.com
Date Deposited: 16 Jan 2008 00:40
Last Modified: 18 Nov 2014 03:27
URI: http://eprints.utas.edu.au/id/eprint/2882
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