N-heterocyclic carbenes.: 19 -: Dicationic chelating N-heterocyclic carbene complexes of palladium:: new catalysts for the copolymerisation of C2H4 and CO

被引：293

作者：

Gardiner, MG ^{[1
]}

Herrmann, WA ^{[1
]}

Reisinger, CP ^{[1
]}

Schwarz, J ^{[1
]}

Spiegler, M ^{[1
]}

机构：

[1] Tech Univ Munich, Inst Anorgan Chem, D-85747 Munich, Germany

来源：

JOURNAL OF ORGANOMETALLIC CHEMISTRY | 1999年 / 572卷 / 02期

关键词：

palladium; homogeneous catalysis; copolymerisation; polymers; heterocyclic carbene;

D O I：

10.1016/S0022-328X(98)00960-7

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Dicationic N-heterocyclic carbene chelates of formula [cis-CH2{N(H)C=C(H)N(R)C}(2)Pd(NCCH3)(2)](2+) (R = Me, 2,4,6-Me-3-C6H2) have been prepared via high yielding, air-stable procedures and structurally characterized in the former case as a 2[BF4](-) salt. The complexes catalyze the copolymerisation of C2H4 and CO to give high molecular weight, strictly alternating poly(C2H4-alt-CO) under mild conditions and low pressures. (C) 1999 Elsevier Science S.A. All rights reserved.

引用

页码：239 / 247

页数：9

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