Transamination complex salts

Without additional reagents Reactions of cupric inner complex salts Ligand exchange Transamination... 

The transamination of the anionic amido ytterbium complex LiYb (N Pr2)4 with aryloxo-functionalised NHC imidazolium salt precursors affords bis-aryloxo-NHC monoamido ytterbium(III) complexes (Scheme 32)71 The complexes are isostructural with one another in the solid state and exhibit average ytterbium-NHC bond distances of 2.487 A (R = Me) and 2.535 A (R = Pr). These are comparable to the monodentate lanthanide(III)-NHC bond lengths where the ligand possesses and amido tether, though a direct comparison with like-for-like metal centre is not possible. The longer ytterbium-NHC bond length where R = Pr is likely as a result of the increased bulk of the ligand. 

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