Literature DB >> 30561125

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

F Mark Chadwick1, Basile F E Curchod2, Rosario Scopelliti1, Farzaneh Fadaei Tirani1, Euro Solari1, Kay Severin1.   

Abstract

Azoimidazolium dyes were used as precursors for mesoionic carbene ligands (Azo-MICs). The properties of these ligands were examined by synthesizing RhI , AuI , and PdII complexes. Experimental (NMR, IR) and theoretical investigations show that Azo-MICs are potent σ-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.
© 2019 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.

Entities:  

Keywords:  N-heterocyclic carbenes; azoimidazolium dyes; gold; mesoionic carbenes; rhodium

Year:  2019        PMID： 30561125     DOI： 10.1002/anie.201813780

Source DB:  PubMed          Journal:  Angew Chem Int Ed Engl        ISSN： 1433-7851            Impact factor:   15.336


  2 in total

1.  Synthesis of aminyl biradicals by base-induced Csp3-Csp3 coupling of cationic azo dyes.

Authors:  Yizhu Liu; Paul Varava; Alberto Fabrizio; Léonard Y M Eymann; Alexander G Tskhovrebov; Ophélie Marie Planes; Euro Solari; Farzaneh Fadaei-Tirani; Rosario Scopelliti; Andrzej Sienkiewicz; Clémence Corminboeuf; Kay Severin
Journal:  Chem Sci       Date:  2019-05-09       Impact factor: 9.825

2.  Donor Strengths Determination of Pnictogen and Chalcogen Ligands by the Huynh Electronic Parameter and Its Correlation to Sigma Hammett Constants.

Authors:  Qiaoqiao Teng; Ping Siang Ng; Jia Nuo Leung; Han Vinh Huynh
Journal:  Chemistry       Date:  2019-09-30       Impact factor: 5.236
  2 in total

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