Redox Reactions Of Polyhydride Complexes of Rhenium: electrochemistry and Reactions With Alkyl Isocyanides期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

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Redox Reactions Of Polyhydride Complexes of Rhenium: electrochemistry and Reactions With Alkyl Isocyanides

Authors:	JD Allison CJ Cameron RE Wild RA Walton

Institution:	Department of Chemistry, Purdue University, West Lafayette, Indiana 47907 U.S.A.

Abstract:	The dark red octahydride complex of dirhenium, Re₂H₈(PPh₃)₄, undergoes a reversible one-electron oxidation to the blue mono-cation Re₂H₈(PPh₃)₄]⁺ (E_{$buit;1 2$} ?0.24 V vs. SCE by cyclic voltammetry). The X-band ESR spectrum of a dichloromethane glass (?160°C) containing the monocation is in accord with the HOMO being a delocalized metal-based orbital. Treatment of the heptahydrides ReH₇(PR₃)₂ (PR₃ = PPh₃ or PEtPh₂) with C₆H₁₁NC or Me₃CNC in the presence of KPF₆ leads to the elimination of hydrogen and the formation of Re(CNR)₄(PR₃)₂]PF₆. Electrochemical oxidation of ReH₅(PPh₃)₂L (L = PPh₃, PEt₂Ph, pyridine, piperidine or cyclohexylamine) activities these molecules to attack by RNC to afford rhenium(I) species

Keywords:	Address any correspondence to this author
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