123rd General Meeting of the KCS

Type Oral Presentation
Area Oral Presentation of Young Inorganic Chemists
Room No. Room 401+402
Time THU 10:50-11:00
Code INOR.O-12
Subject Structure and Reactivity of a Mononuclear Nonheme Manganese(III)-Iodosylarene Complex
Authors Donghyun Jeong, Jaeheung Cho*
Emerging Materials Science, DGIST, Korea
Abstract Transition metal-iodosylarene complexes have been proposed to be key intermediates in the catalytic cycles of metal catalysts with iodosylarene. We report the first X-ray crystal structure and spec-troscopic characterization of a mononuclear nonheme manganese(III)-iodosylarene complex with a tetradentate macrocyclic ligand, [MnIII(TBDAP)(OIPh)(OH)]2+ (2). The manganese(III)-iodosylarene complex is capable of conducting various oxidation reactions with organic substrates, such as C-H bond activation, sulfoxidation and epoxidation. Kinetic studies includ-ing isotope labeling experiments and Hammett correlation demonstrate the electrophilic character on the Mn-iodosylarene adduct. This novel intermediate would be prominently valuable for expanding the chemistry of transition metal catalysts.
E-mail carier4@dgist.ac.kr