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Synthesis and Electrochemistry of Ru-arene Complexes
According to a hypothesis of Boekelheide, Ru-cyclophane
polymers are expected to be accessible by electrochemical polymerization
and might possess intrinsic electrical conductivity and have potential
interest as sensoric materials. We synthesize and characterize by
electrochemical methods precursors for such polymers.
Organometallic complexes with one, two, or three Ru atoms,
which are connected by cyclophane units, are investigated with respect to
their electron-transfer properties. Polymers are precipitated on an electrode,
and the resulting thin films are characterized.
Coworkers in this project:
Stefan Dümmling, Bernhard Gollas, Bernd Krauß, Susanne Schneider and
Ioannis Zagos
We acknowledge funding of this project by the
Deutsche Forschungsgemeinschaft, Bonn -
Bad Godesberg.
Publications from this project:
B. Gollas, B. Speiser, I. Zagos und C. Maichle-Mössmer, J. Organomet. Chem., 602, 75 - 90 (2000);
Electrochemistry of Ruthenium Metallocenes. Part 3. Synthesis, Spectroscopic Characterization, and Electrochemical
Redox Reactions of Ruthenium Arene Complexes with Methacrylic Acid and Methacrylate Ester Substituted
Cyclophane Ligands.
B. Speiser und S. Dümmling, in J. Russow, G. Sandstede und R. Staab (Hrsg.), GDCH-Monographien,
Band 14, 33 - 39 (1999); Zweielektronentransfer-Redoxsysteme. Teil 1. Cyclovoltammetrische Charakterisierung
von Zweielektronentransfers an organischen und metallorganischen Molekülen. (gleichzeitig: Electrochemie
von Rutheniummetallocenen, Teil 2)
L.K. Bieniasz, S. Dümmling, B. Speiser und M. Würde, J. Electroanal. Chem., 447, 173 - 186 (1998);
Use of Sensitivity Analysis Methods in the Modelling of Electrochemical Transients. Part 2. Model Expansion and Model
Reduction.
B. Gollas, I. Hesse, R. Lotz, H. Pasch, B. Speiser und I. Zagos, Liebigs. Ann./Recueil, 1997, 2255 - 2264;
Electrochemical Oxidation of 4-Ethenyl-[22]paracyclophane: Cyclic Voltammetry, Electrosynthesis of Polymers,
Analysis by Liquid Chromatography and Mass Spectrometry.
B. Gollas, B. Speiser, J. Sieglen, J. Strähle und C. Maichle-Mössmer, Z. Krist., 212, 271 - 272
(1997); Crystal Structure of E-4-(2′-Ethoxycarbonyl-2′-methyl)-ethenyl-[22]paracyclophane,
C22H24O2.
B. Gollas und B. Speiser, in F. Beck (Hrsg.), Elektrochemie der Elektronenleiter. Metalle - Oxide - Polymere,
Beiträge der Jahrestagung der GDCh-Fachgruppe Angewandte Elektrochemie, GDCh-Monographie, Band 3, Gesellschaft
Deutscher Chemiker, Frankfurt, 1996, S. 580 (ISBN: 3-924763-56-9); Elektrochemische Redoxreaktionen von
Rutheniumkomplexen aromatischer Liganden: Redoxpolymerfilme aus Vinylcyclophan-Ruthenium-Metallocenen.
B. Gollas, B. Speiser, J. Sieglen und J. Strähle, Organometallics, 15, 260 - 271 (1996);
Electrochemistry of Ruthenium Metallocenes. 1. Synthesis, NMR, and Anodic Electrochemical Behavior of
Vinyl-Substituted Ruthenium Cyclophane Complexes.
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