α-CC agostic structures and aggregation diversity in cyclopropyllithium derivatives.
In the presence of thf or tmeda and depending on experimental conditions, 1-phenylcyclopropyllithium may be crystallised as either dinuclear or tetranuclear species both exhibiting α-CC agostic distortions towards tricoordinate lithium cations. In thf solution, deaggregation of the dinuclear complex takes place to yield a well-defined mononuclear species [Li(thf)3(c-CPhC2H4)].
Laboratoire de Chimie de Coordination du CNRS (LCC), 205 route de Narbonne, BP 44099, 31077 Toulouse Cedex 4, France. michel.etienne@lcc-toulouse.fr.
Quentin
Q
Dufrois
Laure
L
Vendier
Michel
M
Etienne