TY - JOUR
T1 - Übergangsmetall-methylen-komplexe. XLVII. Elektronenstoss-induzierte alkan-eliminierung bei μ-methylen-komplexen von cobalt und rhodium
AU - Mayer, Klaus K.
AU - Fischer, Erich
AU - Bauer, Christine
AU - Herrmann, Wolfgang A.
PY - 1984/1/10
Y1 - 1984/1/10
N2 - The electron impact decomposition pathways of typical μ-methylee complexes of the general composition (μ-CRR′)[(η5-C5Me5)M(CO)]2 (1-6, 8, 9; Me CH3; M Co, Rh) and of the compound (μ-CH2)[(η5-C5H4CH3)Rh(CO)]2 (7) have been elucidated by high resolution measurements, analysis of metastable transitions and 2H labelling. In striking contrast to the previously investigated analogous cyclopentadienyl derivatives, facile loss of the alkylidene bridge CRR′, predominantly as saturated alkane H2CRR′, is a typical property of these particular dimetallacyclopropane-type molecules. As a rule, alkane elimination occurs after loss of the first carbon monoxide ligand. This process also dominates the thermolytic degradation sequence of compounds 1-6, 8, 9 and is in accord with double C5(CH3)5-to-CRR′ hydrogen transfer as shown by labelling experiments.
AB - The electron impact decomposition pathways of typical μ-methylee complexes of the general composition (μ-CRR′)[(η5-C5Me5)M(CO)]2 (1-6, 8, 9; Me CH3; M Co, Rh) and of the compound (μ-CH2)[(η5-C5H4CH3)Rh(CO)]2 (7) have been elucidated by high resolution measurements, analysis of metastable transitions and 2H labelling. In striking contrast to the previously investigated analogous cyclopentadienyl derivatives, facile loss of the alkylidene bridge CRR′, predominantly as saturated alkane H2CRR′, is a typical property of these particular dimetallacyclopropane-type molecules. As a rule, alkane elimination occurs after loss of the first carbon monoxide ligand. This process also dominates the thermolytic degradation sequence of compounds 1-6, 8, 9 and is in accord with double C5(CH3)5-to-CRR′ hydrogen transfer as shown by labelling experiments.
UR - https://www.scopus.com/pages/publications/48749135475
U2 - 10.1016/S0022-328X(00)98699-6
DO - 10.1016/S0022-328X(00)98699-6
M3 - Artikel
AN - SCOPUS:48749135475
SN - 0022-328X
VL - 260
SP - 235
EP - 254
JO - Journal of Organometallic Chemistry
JF - Journal of Organometallic Chemistry
IS - 2
ER -