摘要:
                                Gas-phase experiments on deuterium-labeled BuZn-(TMEDA)(+) (TMEDA = N,N,N',N'-tetramethylethylenediamine) prove that the loss of butene from this species corresponds to a beta-H elimination. Quantum-chemical calculations corroborate this finding and furthermore predict that the fragmentations of related cationic butylzinc complexes as well as of Bu3Zn- follow similar mechanisms.