The first bridged lanthanide carbene complex formed through reduction of carbodiimide by diamine-bis(phenolate) ytterbium(II) complex and its reactivity to phenylisocyanate

摘要

The reaction of YbL(THF)2 (L = [-OC_6H_2(2,4-~tBu_2)-(6-CH_2)]_2NCH_2CH_2NMe_2) with 'PrN = C = N'Pr led to the bridged carbene ytterbium complex (YbL)_2(u-N'PrCN'Pr) via a two-electron reduction process of carbodiimide, which reacted with PhNCO to afford a dinuclear ytterbium complex and a spiro derivative. Activation and transformation of small molecules mediated by divalent lanthanide complexes are one of the most important topics in organolanthanide chemistry. Carbodiimides are of interest for metal based reactivity studies as they are a member of the heterocumulene family and show widespread reactivity.