The ethylsulfinate ligand:: A highly efficient initiating group for the zinc β-diiminate catalyzed copolymerization reaction of CO2 and epoxides

被引：110

作者：

Eberhardt, R

Allmendinger, M

Luinstra, GA

Rieger, B ^{[1
]}

机构：

[1] Univ Ulm, Dept Mat & Catalysis, D-89069 Ulm, Germany

[2] BASF AG, D-67056 Ludwigshafen, Germany

来源：

ORGANOMETALLICS | 2003年 / 22卷 / 01期

关键词：

D O I：

10.1021/om020734f

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The quantitative synthesis of a series of new zinc(II) sulfinate complexes (4a-e) by insertion of SO2 into zinc-ethyl bonds of beta-diiminate complexes ((ArN= C(CH3)CH=(CH3)CNAr)Zn(O(S=O)Et); Ar = 2,6-diisopropylphenyl (4a), 2,6-diethylphenyl (4b), 2-ethyl-6-isopropylphenyl (4c), 2,6-diphenylphenyl (4d), 2,q-bis(4-tert-butylphenyl)phenyl (4e)) is described. X-ray structure analysis reveals a dinuclear, mu-ethylsulfinate-bridged structure for 4a in the solid state, which in solution exists in an equilibrium with the mononuclear species. The easily accessible complexes 4a-c are highly active catalysts for the alternating copolymerization Of CO2 and cyclohexene oxide, leading to products with narrow molecular weight distributions.

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页码：211 / 214

页数：4

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