Übergangsmetall-methylen-komplexe

摘要: Abstract The electron impact decomposition pathways of typical μ-methylee complexes the general composition (μ-CRR′)[(η5-C5Me5)M(CO)]2 (1–6, 8, 9; Me  CH3; M Co, Rh) and compound (μ-CH2)[(η5-C5H4CH3)Rh(CO)]2 (7) have been elucidated by high resolution measurements, analysis metastable transitions 2H labelling. In striking contrast to previously investigated analogous cyclopentadienyl derivatives, facile loss alkylidene bridge CRR′, predominantly as saturated alkane H2CRR′, is a property these particular dimetallacyclopropane-type molecules. As rule, elimination occurs after first carbon monoxide ligand. This process also dominates thermolytic degradation sequence compounds 1–6, 9 in accord with double C5(CH3)5-to-CRR′ hydrogen transfer shown labelling experiments.