Homoleptic ‘sandwich’ complexes of substituted tris(methimazolyl)borate ligands with ruthenium, rhodium and palladium
作者:Philip J. Bailey、Nicola L. Bell、Gary S. Nichol
DOI:10.1039/c3dt51150b
日期:——
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
A New Synthesis of Charge-Neutral Tris-Pyrazolyl and -Methimazolyl Borate Ligands
作者:Philip J. Bailey、Laura Budd、Filipa A. Cavaco、Simon Parsons、Felix Rudolphi、Alejandro Sanchez-Perucha、Fraser J. White
DOI:10.1002/chem.200902763
日期:——
energies. This comparison indicates that the new neutral ligands are only marginally weaker donors than the corresponding anionic hydrotris(azolyl)borateligands. This may be explained by the ability of the attached nmi ring to stabilize a positive charge remotely from the coordinated metal, which may also account for the fact that the [(nmi)B(pyrazolyl)3] ligand is a substantially stronger donor than the