Azo‐MICs: Redox‐Active Mesoionic Carbene Ligands Derived from Azoimidazolium Dyes | Zendy

Chadwick F. Mark | Zendy; Curchod Basile F. E. | Zendy; Scopelliti Rosario | Zendy; Fadaei Tirani Farzaneh | Zendy; Solari Euro | Zendy; Severin Kay | Zendy

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

Author(s) -

Chadwick F. Mark,

Curchod Basile F. E.,

Scopelliti Rosario,

Fadaei Tirani Farzaneh,

Solari Euro,

Severin Kay

Publication year - 2019

Publication title -

angewandte chemie

Language(s) - English

Resource type - Journals

eISSN - 1521-3757

pISSN - 0044-8249

DOI - 10.1002/ange.201813780

Subject(s) - mesoionic , carbene , chemistry , cyclic voltammetry , photochemistry , redox , singlet state , homo/lumo , stereochemistry , electrochemistry , medicinal chemistry , organic chemistry , molecule , catalysis , physics , electrode , nuclear physics , excited state

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 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.

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