Structure and Unprecedented Reactivity of a Mononuclear Nonheme Cobalt(III) Iodosylbenzene Complex
Jindou Yang, Mi Sook Seo, Kyung Ha Kim, Yong‐Min Lee, Shunichi Fukuzumi, Jason Shearer, Wonwoo Nam
Abstract
Abstract 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.