THE INFLUENCE OF VARIOUS AZOLATE BRIDGING LIGANDS ON THE CATALYTIC ACTIVITY OF DINUCLEAR RHODIUM(I) PRECURSORS IN THE HYDROFORMYLATION REACTION

被引:7
作者
CLAVER, C
KALCK, P
ORO, LA
PINILLOS, MT
TEJEL, C
机构
[1] ECOLE NATL SUPER CHIM TOULOUSE,CATALYSE & CHIM FINE LAB,118 ROUTE NARBONNE,F-31077 TOULOUSE,FRANCE
[2] UNIV ZARAGOZA,INST CIENCIA MAT ARAGON,DEPT QUIM INORGAN,CSIC,E-50009 SARAGOSSA,SPAIN
来源
JOURNAL OF MOLECULAR CATALYSIS | 1987年 / 43卷 / 01期
关键词
CATALYSTS - Rhodium Compounds - HYDROCARBONS - Processing;
D O I
10.1016/0304-5102(87)87013-X
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The selective catalytic activity of various left bracket Rh//2( mu -Az)//2(CO)//2L//2 right bracket complexes in the low pressure hydroformylation reaction has been examined. With Az equals triazolate or benzotriazolate, the activity decreases in the sequence PPh//3 greater than P(OMe)//3 greater than P(OPh)//3, and the dinuclear structure is presumably retained during the catalytic cycle. However, with Az equals tetrazolate the inverse order of activity (P(OPh//3)//3 greater than P(OMe)//3 greater than PPh//3) is observed; this is probably due to cleavage of the bridging ligand during the reaction. Under the same conditions the mixed complex left bracket (COD)Rh( mu -pyrazolate)//2Pt(dppe) right bracket ** plus is completely inactive.
引用
收藏
页码:1 / 6
页数:6
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