Ruthenium(II) Dichloride Complexes of Chiral, Tetradentate Aminosulfoxide Ligands: Stereoisomerism and Redox-Induced Linkage Isomerism

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• 作者：Peter O. Atolagbe ; Krista N. Taylor ; Samantha E. Wood ; Arnold L. Rheingold ; Lenora K. Harper ; Craig A. Bayse ; Tim J. Brunker
• 刊名：Inorganic Chemistry
• 出版年：2013
• 出版时间：February 4, 2013
• 年：2013
• 卷：52
• 期：3
• 页码：1170-1172
• 全文大小：214K
• 年卷期：v.52,no.3(February 4, 2013)
• ISSN：1520-510X

文摘

Ruthenium(II) dichloride complexes of two chiral tetradentate aminosulfoxide ligands, varying only in the N鈥揘 linker, were synthesized. With each ligand, two major isomers formed, and these were structurally assigned and characterized through a combination of NMR and UV鈥搗is spectroscopies, X-ray crystallography, and density functional theory calculations. The cis-尾 geometric isomer was formed by each ligand, whereas the trans and cis-伪 geometric isomers were significant components for one ligand only. Cyclic voltammetry studies show that only the cis-尾 isomers undergo linkage isomerism upon oxidation to ruthenium(III), whereas the trans and cis-伪 isomers show simple reversible redox couples.