Estimating the effective steric impact of P(t)Bu(2)Me, P(i)Pr-3, and PCy(3)

被引：28

作者：

Li, CB

Ogasawara, M

Nolan, SP

Caulton, KG

机构：

[1] INDIANA UNIV,DEPT CHEM,BLOOMINGTON,IN 47405

[2] UNIV NEW ORLEANS,DEPT CHEM,NEW ORLEANS,LA 70148

来源：

ORGANOMETALLICS | 1996年 / 15卷 / 23期

关键词：

D O I：

10.1021/om960380q

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Enthalpies of reaction of Ru(CO)(2)L(2) (L = (PPr3)-Pr-i, P(t)Bu(2)Me, and PCy(3)) with MeNC, PhC=CPh (both addition reactions) and PhCC-H (C-H oxidative addition) in toluene ape exothermic in the range 10-25 kcal/mol and are interpreted in terms of P(t)Bu(2)Me being more bulky than (PPr3)-Pr-i or PCy(3). Enthalpy comparisons show that the larger cone angle of PCy(3) than of (PPr3)-Pr-i can be overcome by the greater donor power of PCy(3); the origin of the greater donor power of PCy(3) is discussed.

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页码：4900 / 4903

页数：4

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