Effect of ligand donor-acceptor properties on selectivity of catalytic olefin isomerization reaction

✍ Scribed by A.M. Trzeciak; L. Szterenberg; E. Wolszczak; J.J. Ziółkowski

• Book ID: 103997472
• Publisher: Elsevier Science
• Year: 1995
• Tongue: English
• Weight: 519 KB
• Volume: 99
• Category: Article
• ISSN: 1381-1169
• DOI: 10.1016/1381-1169(95)00037-2

✦ Synopsis

Isomerization reaction of hex-1-ene, 1,5-hexadiene and 1,7-octadiene, catalyzed by HRh( CO) (PPh,), and HRh( PPh3)4 at 40°C have been studied. Hex-I-ene undergoes total conversion to hex-2-ene at presence of both of catalysts used, whereas isomerization of dienes is catalysed by HRh( CO) ( PPh3), complex only. To explain observed differences in catalyst activity, theoretical calculations for model structures of [ HRh( CO),( hexadiene) ] (I) and [ Hti( PH,),( hexadiene) ] (II), by Fenske-Hall method have been done. The calculations allowed elucidation of the isomerization reaction course which depends on electron density distribution in rhodium-+lefin complex as well as on the way of olefin coordination to the rhodium.