New Structural Motifs of Lithium N-Heterocyclic Carbene Complexes with Bis(3-tert-butylimidazol-2-ylidene)dialkylborate Ligands
Organometallics2009Vol. 28(12), pp. 3532–3536
Citations Over TimeTop 17% of 2009 papers
Abstract
Employment of bidentate, anionic bis(3-tert-butylimidazol-2-ylidene)dialkylborate N-heterocyclic ligands [BIMtBuBR2]− (R = Ph or Me) led to the isolation of two unprecedented lithium carbene complexes: monomeric chelating [(BIMtBuBPh2)Li(OEt2)] (4a) and nonchelating, dimeric μ2-κC2:κC2′-[(BIMtBuBMe2)2Li2] (4b). Both have been characterized by spectroscopic methods and by single-crystal X-ray diffraction.
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