2009 Fiscal Year Final Research Report

Construction of highly active reaction fields produced by electrochemical oxidation of platinum complexes bearing a cyclometalated ligand

Research Project

Project/Area Number	20750045
Research Category	Grant-in-Aid for Young Scientists (B)
Allocation Type	Single-year Grants
Research Field	Inorganic chemistry
Research Institution	Tokyo Institute of Technology
Principal Investigator	KOIZUMI Take-aki Tokyo Institute of Technology, 資源化学研究所, 准教授 (60322674)
Project Period (FY)	2008 – 2009
Keywords	白金錯体 / ルテニウム錯体 / 有機金属錯体 / 電気化学 / 多段階酸化還元 / シクロメタル化配位子 / 結晶構造 / ノン-イノセント配位子
Research Abstract	Construction of the highly active reaction field by converting the Pt(II) complex with benzenediamide (bda) derivatives, which shows characteristic reversible two-step redox behavior, as a ligand into the d^6 complex by two-electron oxidation was aimed. The oxidation potential of the bda ligand was shifted negatively by using the cyclomatallated ligand as an auxiliary ligand. The structural change of the complex from square-planar (Pt(II)) to octahedral (Pt(IV)) was considered to be promoted by further oxidation of the complex. The change was observed by the electrochemical measurement, and the result strongly suggested the construction of the highly active reaction field.