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Dalton Trans. 2013 Aug 21;42(31):11281-94. doi: 10.1039/c3dt51150b.

Homoleptic 'sandwich' complexes of substituted tris(methimazolyl)borate ligands with ruthenium, rhodium and palladium.

Dalton transactions (Cambridge, England : 2003)

Philip J Bailey, Nicola L Bell, Gary S Nichol

Affiliations

  1. School of Chemistry, The University of Edinburgh, Joseph Black Building, The Kings Buildings, West Mains Road, Edinburgh, EH9 3JJ, UK. [email protected]

PMID: 23811763 DOI: 10.1039/c3dt51150b

Abstract

The pursuit of heteroleptic 'half-sandwich' complexes of boron substituted anionic and charge-neutral tris(methimazolyl)borate ligands is described. The formation of the homoleptic 'sandwich' complexes was found to be favoured when the metal precursor contains labile ligands. When unable to form these homoleptic complexes Tm is shown to preferentially coordinate in a κ²-[S,S] fashion. This study reinforces previous assertions that the Tm ligand preferentially adopts the κ²-[S,S] mode when coordinated to electron rich metal centres and demonstrates the strong electron donor properties of substituted Tm ligands.

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