ne to zero-valent lanthanides has been carried out. The formation of organolanthanide derivatives RLnX (R = α-C4H3S, C6F5) has been confirmed by isolation of the corresponding RSnPh3 resulting from the interaction of RLnX with Ph3SnCl. The reaction of lanthanide with C6F5Br is sensitive to the nature of the metal.
Organometallic compounds of bivalent europium, ytterbium, and samarium
作者:D. F. Evans、G. V. Fazakerley、R. F. Phillips
DOI:10.1039/j19710001931
日期:——
Europium and ytterbium readily react with alkyl and aryl iodides in tetrahydrofuran. It is shown from the magnetic susceptibilities and a variety of analytical procedures that the solutions contain predominantly RMII| species. They undergo typical Grignard-type reactions. Samarium reacts less readily and the percentage of the bivalent state is considerably lower. Cerium also reacts under similar conditions
tetra和容易在四氢呋喃中与烷基和芳基碘化物反应。从磁化率和各种分析程序可以看出,溶液主要包含RM II |。物种。它们经历典型的格利雅(Grignard)型反应。mar的反应较不容易,二价态的百分数大大降低。铈也会在相似的条件下反应,以产生适量的有机金属物种。描述了用于确定磁化率的nmr方法的修改。
C–C Bond cleavage and deoxygenation of chalcone by the organo-ytterbium σ-complex PhYbI
Reaction of excess of the organo-ytterbiumσ-complexPhYbI with chalcone gives trans-stilbene (1), the C–Cbondcleavage product and 1,1,3-triphenylpropene (2) together with diphenylmethanol (3); a possible mechanism of the reaction if proposed.