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Das Redoxverhalten des Hexakismethylisonitrilmangan(I)-Ions in Propylencarbonat

Redox behaviour of hexakismethylisonitrilemanganese(I) in propylene carbonate

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  • Anorganische, Struktur- und Physikalische Chemie
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Monatshefte für Chemie / Chemical Monthly Aims and scope Submit manuscript

Abstract

Employing voltammetric and polarographic methods the hexakismethylisonitrilemanganese(I) [Mn(L)6 +] ion was found to undergo two oxidation steps to hexakismethylisonitrilemanganese(II) and hexakismethylisonitrilemanganese(III) as well as a reduction to the metal. Using bisbiphenylchromium(I) iodide [BBCr(I)I] throughout this study as a reference system cyclic voltammetry yielded a value of 2.29 V for the oxydation Mn(L)6 2+/Mn(L)6 3+ and 1.11 V for the oxydation Mn(L)6 +/Mn(L)6 2+ vs.BBCr(I)I. The half wave potential on the dropping mercury electrode for the oxidation Mn(L)6 +/Mn(L)6 2+ aggreed within the limits of experimental error with the value obtained by cyclic voltammetry, theE 1/2 for the reduction was found to be −1.87 V vs.BBCr(I)I. Large scale electrolysis, coulometry and the rotating platinum electrode were used to learn about the nature of the reaction and the reaction products. 0.1M solutions of tetraethylammonium perchlorate tetrabutylammonium perchlorate and tetraethylammonium nitrate served as supporting electrolytes. The standard rate constant for the reaction Mn(L)6 +/Mn(L)2+ was 1.1·10−2 cm·sec−1 and for the reaction Mn(L)6 2+/Mn(L)6 3+ 4,7·10−3 cm·sec−1. The UV-spectra of Mn(L)6 + and Mn(L)6 2+ were also recorded.

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Authors and Affiliations

  1. Institut für Anorganische Chemie, Technische Universität Wien, Getreidemarkt 9, A-1060, Wien, Österreich

    Gerhard Gritzner

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  1. Gerhard Gritzner
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Gritzner, G. Das Redoxverhalten des Hexakismethylisonitrilmangan(I)-Ions in Propylencarbonat. Monatshefte für Chemie 107, 1055–1064 (1976). https://doi.org/10.1007/BF00903791

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  • DOI: https://doi.org/10.1007/BF00903791

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