Stereoelectronic effects characterizing nucleophilic carbene ligands bound to the CpRuCl (Cp = η5-C5Me5) moiety:: A structural and thermochemical investigation

被引：317

作者：

Huang, JK ^{[1
]}

Schanz, HJ ^{[1
]}

Stevens, ED ^{[1
]}

Nolan, SP ^{[1
]}

机构：

[1] Univ New Orleans, Dept Chem, New Orleans, LA 70148 USA

来源：

ORGANOMETALLICS | 1999年 / 18卷 / 12期

关键词：

D O I：

10.1021/om990054l

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The reaction of [Cp*RuCl](4) (1) with carbene ligands affords unsaturated Cp*Ru(L)Cl [Cp* = eta(5)-C5Me5; L = 1,3-R-2-imidazol-2-ylidene [R = cyclohexyl (ICy, 2); 4-methylphenyl (ITol, 3); 4-chlorophenyl (IpCl, 4); adamantyl (IAd, 5)] and 4,5-dichloro-1,3-bis(2,4,6-trimethylphenyl)imidazol-2-ylidene (IMesCl, 6)] complexes 2-6 in high yield. Solution calorimetric investigations of this series provides a measure of the electron donor properties of all ligands, and comparisons are made with IMes [1,3-bis(2,4,6-trimethylphenyl)imidazol-2-ylidene] and the widely used PCy3. Structural information from single X-ray studies for complexes 2, 3, 5, 6, Cp*Ru(IMes)Cl (7), Cp*Ru(PCy3)Cl (8), and Cp*Ru((PPr3)-Pr-i)Cl (9) permits a quantitative treatment of steric parameters associated with these Ligands.

引用

页码：2370 / 2375

页数：6

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Stereoelectronic effects characterizing nucleophilic carbene ligands bound to the Cp*RuCl (Cp* = η5-C5Me5) moiety:: A structural and thermochemical investigation

Stereoelectronic effects characterizing nucleophilic carbene ligands bound to the CpRuCl (Cp = η5-C5Me5) moiety:: A structural and thermochemical investigation