title: Optimizing the lifetimes of phenoxonium cations derived from vitamin E via structural modifications.
abstract: Systematic synthesis of a number of new phenolic compounds with structures similar to vitamin E led to the identification of several sterically hindered compounds that when electrochemically oxidised in acetonitrile in a -2e(-)/-H(+) process formed phenoxonium diamagnetic cations that were resistant to hydrolysis reactions. The reactivity of the phenoxonium ions was ascertained by performing cyclic voltammetric scans during the addition of carefully controlled quantities of water into acetonitrile solutions, with the data modelled using digital simulation techniques.
authors.affiliation: Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore. webster@ntu.edu.sg.
authors.forename: Yanni
authors.initials: Y
authors.lastname: Yue
authors.forename: Maria L
authors.initials: ML
authors.lastname: Novianti
authors.forename: Malcolm E
authors.initials: ME
authors.lastname: Tessensohn
authors.forename: Hajime
authors.initials: H
authors.lastname: Hirao
authors.forename: Richard D
authors.initials: RD
authors.lastname: Webster
mesh_terms: D000097:Acetonitriles / Q000737:chemistry; D002412:Cations / Q000737:chemistry*; D004563:Electrochemistry; D015394:Molecular Structure; D009861:Onium Compounds / Q000737:chemistry*; D010084:Oxidation-Reduction; D010636:Phenols / Q000737:chemistry*; D014810:Vitamin E / Q000737:chemistry*
chemical_list: D000097:Acetonitriles; D002412:Cations; D009861:Onium Compounds; D010636:Phenols; D014810:Vitamin E; C032159:acetonitrile