Agostic deformations based on electron delocalization in the alkyllithium-complex [{2-(Me3Si)(2)CLiC5H4N}(2)

Topological analysis of experimental and theoretical charge densities in th e title complex[{2-(Me3Si)(2)CLiC5H4N}(2)] 1 reveals the nature of the agos tic deformation postulated for this complex: delocalization of the Li-C bon ding electrons over the entire agostic alkyl group controls the formation o f an acute Li-C-Si angle and thus a sufficient electronic saturation of the electron deficient lithium atom via secondary interactions.