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Structure and Unprecedented Reactivity of a Mononuclear Nonheme Cobalt(III) Iodosylbenzene Complex
Author(s) -
Yang Jindou,
Seo Mi Sook,
Kim Kyung Ha,
Lee YongMin,
Fukuzumi Shunichi,
Shearer Jason,
Nam Wonwoo
Publication year - 2020
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.202005091
Subject(s) - reactivity (psychology) , chemistry , cobalt , olefin fiber , adduct , aldehyde , nucleophile , metal , photochemistry , medicinal chemistry , catalysis , organic chemistry , pathology , medicine , alternative medicine
A mononuclear nonheme cobalt(III) iodosylbenzene complex, [Co III (TQA)(OIPh)(OH)] 2+ ( 1 ), is synthesized and characterized structurally and spectroscopically. While 1 is a sluggish oxidant in oxidation reactions, it becomes a competent oxidant in oxygen atom transfer reactions, such as olefin epoxidation, in the presence of a small amount of proton. More interestingly, 1 shows a nucleophilic reactivity in aldehyde deformylation reaction, demonstrating that 1 has an amphoteric reactivity. Another interesting observation is that 1 can be used as an oxygen atom donor in the generation of high‐valent metal‐oxo complexes. To our knowledge, we present the first crystal structure of a Co III iodosylbenzene complex and the unprecedented reactivity of metal‐iodosylarene adduct.