Azo-MICs: Redox-Active Mesoionic Carbene Ligands Derived from Azoimidazolium Dyes

被引：15

作者：

Chadwick, F. Mark ^{[1
]}

Curchod, Basile F. E. ^{[2
]}

Scopelliti, Rosario ^{[1
]}

Tirani, Farzaneh Fadaei ^{[1
]}

Solari, Euro ^{[1
]}

Severin, Kay ^{[1
]}

机构：

[1] Ecole Polytech Fed Lausanne, Inst Sci & Ingn Chim, CH-1015 Lausanne, Switzerland

[2] Univ Durham, Dept Chem, South Rd, Durham DH1 3LE, England

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2019年 / 58卷 / 06期

关键词：

azoimidazolium dyes; gold; mesoionic carbenes; N-heterocyclic carbenes; rhodium; N-HETEROCYCLIC CARBENES; COMPLEXES; RADICALS; REMOTE;

D O I：

10.1002/anie.201813780

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Azoimidazolium dyes were used as precursors for mesoionic carbene ligands (Azo-MICs). The properties of these ligands were examined by synthesizing Rh-I, Au-I, and Pd-II complexes. Experimental (NMR, IR) and theoretical investigations show that Azo-MICs are potent sigma-donor ligands. Yet, they feature a small singlet-triplet gap and very low-lying LUMO levels. The unique electronic properties of Azo-MICs allow for reversible one-electron reductions of the metal complexes, as evidenced by cyclic voltammetry.

引用

页码：1764 / 1767

页数：4

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