A mesoionic carbene complex of manganese in five oxidation states. Issue 41 (3rd May 2022)

• Record Type: Journal Article
• Authors: Wittwer, Benjamin; Dickmann, Nicole; Berg, Stephan; Leitner, Daniel; Tesi, Lorenzo; Hunger, David; Gratzl, Raphael; van Slageren, Joris; Neuman, Nicolas I.; Munz, Dominik; Hohloch, Stephan
• Is Part Of: Chemical communications. Volume 58:Issue 41(2022)
• Page Start: 6096
• Page End: 6099
• Publication Date: 2022-05-03
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1039/d2cc00097k
• Languages: English
• ISSNs: 1359-7345

Abstract

Abstract : A rare, high-valent manganese(iv ) mesoionic carbene complex is shown to be stable in five oxidation states, spanning a 3 Volt voltage range. Abstract : Reaction between a carbazole-based mesoionic carbene ligand and manganese(ii ) iodide results in the formation of a rare air-stable manganese(iv ) complex after aerobic workup. Cyclic voltammetry reveals the complex to be stable in five oxidation states. The electronic structure of all five oxidation states is elucidated chemically, spectroscopically (NMR, high-frequency EPR, UV-Vis, MCD), magnetically, and computationally (DFT, CASSCF).