Electrochemical Studies of the Formation Mechanism of (cation) x [Ni(dmit) 2 Conductive Compounds and of their Non-Integer Oxidation State
1993; Volume: 237; Issue: 1 Linguagem: Inglês
10.1080/10587259308030156
ISSN1058-725X
AutoresJean Bernard Tommasino, Brigitte Pomarède, Dominique Medus, Dominique de Montauzon, P. Cassoux, Paul‐Louis Fabre,
Tópico(s)Ionic liquids properties and applications
ResumoAbstract The mechanism of electrocrystallization of (cation) x [Ni(dmit)2 (cation = NHMe+ 3, NMe+ 4) conductive compounds is studied under non-stationary conditions by cyclic voltammetry using ultramicroelectrodes at high potential-scan rates. It is shown that the formation of non-integer oxidation state compounds proceeds through one-electron transfers combined with chemical reaction between [Ni(dmit)2 − and [Ni(dmit)2 0 electrogenerated species exhibiting integer charges. The non-integer oxidation state in (cation) x [Ni(dmit)2 compounds (cation = NBu+ 4, AsPh+ 4, NH2Me+ 2, NH3Me+), measured by the non-integer value of x, is determined under stationary conditions by use of the carbon paste electrode at very low potential-scan rates.
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