Synthesis of tetra-silylated tetrathiafulvalene derivatives TTF(SiR 2H) 4 (R = Me, Ph): Novel assembling ligands for the construction of bimetallic transition metal complexes

The HR 2Si-functionalized tetrathiafulvalene (TTF) ligand TTF(SiR 2H) 4 (R = Me 2a; R = Ph 2b) have been synthesized and the molecular structure of 2a determined. The reactivity of the four Si–H bonds for oxidative addition reactions has been exploited. Thus, the bimetallic platinum–silicon complex...

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Bibliographic Details
Published in:Synthetic metals 2005-08, Vol.151 (3), p.186-190
Main Authors: Guyon, Fabrice, Jayaswal, Mathuresh N., Peindy, Harmel N., Hameau, Aurélien, Knorr, Michael, Avarvari, Narcis
Format: Article
Language:English
Subjects:
Chemical Sciences
Condensed matter: structure, mechanical and thermal properties
Electrochemistry
Exact sciences and technology
Material chemistry
Molecular structure
Organic compounds
Physics
Platinum
Silicon
Structure of solids and liquids
crystallography
Structure of specific crystalline solids
Tetrathiafulvalene
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Summary:The HR 2Si-functionalized tetrathiafulvalene (TTF) ligand TTF(SiR 2H) 4 (R = Me 2a; R = Ph 2b) have been synthesized and the molecular structure of 2a determined. The reactivity of the four Si–H bonds for oxidative addition reactions has been exploited. Thus, the bimetallic platinum–silicon complex [(PPh 3) 2Pt{(Me 2Si) 2TTF(SiMe 2) 2}Pt(PPh 3) 2] 3 incorporating TTF(SiMe 2H) 4 as bridging unit has been assembled by oxidative addition across [Pt(PPh 3) 2(CH 2 CH 2)]. Electrochemical investigations by means of cyclic voltammetry reveals, for the complex 3, a strong cathodic shift of the two redox processes of the TTF core compared with those of 2a.
ISSN:0379-6779
1879-3290
DOI:10.1016/j.synthmet.2005.04.004