alexa Mechanistic Study Of Alcohol Oxidation By Oxidized CuII Salen-type Complexes: Relationship Between Reactivity And The Electronic Structure Of The Complexes
ISSN: 2161-0401

Organic Chemistry: Current Research
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3rd International Conference on Organic and Inorganic Chemistry
July 17-19, 2017 Chicago, USA

Yuichi Shimazaki
Ibaraki University, Japan
ScientificTracks Abstracts: Organic Chem Curr Res
DOI: 10.4172/2161-0401-C1-019
The redox chemistry of metal complexes has been widely developed in recent years, affording deep insights into the reaction mechanisms for many useful homogeneous catalytic reactions and enzymatic reactions at the active site of metalloenzymes. While studies on oxidative reaction intermediates are in progress, the oxidation state of the metal ions in the active species has not been fully understood until now. Detailed descriptions of the oxidation state of the intermediate are sometimes complicated, because the oxidation locus on oxidized metal complexes is often different from the “formal” oxidation site. Although “formal” and “experimental” oxidation numbers are identical in many cases, they are frequently used as synonyms, since the term of the physical or experimental oxidation state has not been accepted in some areas of chemistry. This practice leads to considerable confusion and presents an obstacle to the progress of the experimental determination of the intermediate. Tetradentate Schiff-bases, such as salens, have received considerable attention as a ligand system due to their relative ease of synthesis, ability to form stable complexes with many metals in a variety of oxidation states, and versatility as catalysts for important organic transformations. Concurrent studies have investigated the electronic structure of oxidized metal salen systems, determining the factors that control the locus of oxidation in these complexes. Depending on the relative energies of the redox-active orbitals, metal complexes with pro-radical ligands can exist in a limiting description as a metal-ligand radical, [Mn+(L•)]n+, or a high valent metal complex, [M(n+1)+(L-)]n+. This presentation would discuss with recent advances in the chemistry related with the oxidation behavior of some metal–salen type complexes and their properties, especially focusing on comparison of their properties with those of the high valent metal–phenolate complexes which are iso-electronic with the phenoxyl radical complexes.

Yuichi Shimazaki received his Doctor’s degree in Science from Nagoya University in 2000 under the supervision of Professor Osamu Yamauchi. He joined Professor Yoshinori Naruta’s group at Kyushu University as Assistant Professor and worked on the redox behavior of various metal porphyrin complexes as models of the active site of metalloenzymes. In 2008, he was promoted to Associate Professor at the College of Science, Ibaraki University. His research interests include the oxidation chemistry of the complexes of various metal ions, model studies of metalloenzymes, bioorganometallic chemistry and weak interactions in metalorganic molecule systems.

Email: [email protected]

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