Electrochemical oxidation of cyclic polysilanes under ‘oxygen-free’ and ‘water-free’ conditions
The electrochemical behavior of seven substituted cyclic polysilanes, namely hexamesitylcyclotrisilane (Mes 2Si) 3 (I), 1,2,3,4-tetra- tert-butyltetramethyl-cyclotetrasilane [ t-Bu(Me)Si] 4 (II) (mixture of isomers), decapropylcyclopentasilane (Pr 2Si) 5 ( III) , dodecamethylcyclohexasilane (Me 2Si)...
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Published in | Journal of electroanalytical chemistry (Lausanne, Switzerland) Vol. 455; no. 1; pp. 197 - 204 |
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Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
Amsterdam
Elsevier B.V
15.09.1998
Elsevier Science |
Subjects | |
Online Access | Get full text |
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Summary: | The electrochemical behavior of seven substituted cyclic polysilanes, namely hexamesitylcyclotrisilane (Mes
2Si)
3 (I), 1,2,3,4-tetra-
tert-butyltetramethyl-cyclotetrasilane [
t-Bu(Me)Si]
4 (II) (mixture of isomers), decapropylcyclopentasilane (Pr
2Si)
5 (
III)
, dodecamethylcyclohexasilane (Me
2Si)
6 (
IV), tetradecaethylcycloheptasilane (Et
2Si)
7 (
V), hexadecamethylcyclooctasilane (Me
2Si)
8 (
VI) and octadecamethylcyclononasilane (Me
2Si)
9 (
VII), have been studied by cyclic voltammetry and preparative electrolysis in ‘oxygen-free’ and ‘water-free’ solutions of CH
2Cl
2+CH
3CN+CF
3COOH (4:1:1) containing sodium trifluoroacetate as the supporting electrolyte. The products are cyclic compounds with one or two oxygen atoms as well as silicon atoms in the rings. The effects of ring size and nature of substituent on the oxidation peak potentials and reactivity of starting materials, and on the selectivity of the outcoming products, are discussed. |
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ISSN: | 1572-6657 1873-2569 |
DOI: | 10.1016/S0022-0728(98)00209-5 |