Synthesis and ligand properties of a persistent, all-carbon four-membered-ring allene.
A single donor substituent at each terminus is sufficient to make the CCC skeleton of allenes very flexible and give carbon(0) character to the central carbon atom. This allows the synthesis of a four-membered carbocyclic allene, which can be doubly protonated and behaves as a very strong eta(1)-donor ligand for transition metals (see scheme).
Melaimi
Mohand
M
UCR-CNRS Joint Research Chemistry Laboratory (UMI 2957), Department of Chemistry, University of California, Riverside, CA 92521-0403, USA.
Parameswaran
Pattiyil
P
Donnadieu
Bruno
B
Frenking
Gernot
G
Bertrand
Guy
G