Das Reduktionsverhalten von Pentacarbonylpyridin-Komplexen des Chroms, Molybdäns und Wolframs
The reduction behaviour of pentacarbonylpyridinechromium, -molybdenum and -tungsten complexes
- The reduction of group VIB metal pentacarbonyl complexes and of iodomethylates of 4- trimethylsilyl-, 4-acetyl- and 4-cyanopyridine has been investigated. Informations on the dissociation of the complexes and on the potential and reversibility of the one-electron reduction were obtained by cyclic voltammetry in DMF, whereas electron spin resonance (ESR) studies of the primary reduction products in the 4-acetylpyridine series revealed the distribution of the unpaired electron. The results suggest that the lowest unoccupied molecular orbital (LUMO) is a ligand centered π*-orbital in the 4-acetyl- and 4-cyanopyridine complexes, thus confirming assignments from photochemistry. The results allow an assessment of both N-coordination and substituent effects at the heterocyclic ligand.
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| Author: | Wolfgang KaimORCiDGND |
|---|---|
| URN: | urn:nbn:de:hebis:30:3-719789 |
| DOI: | https://doi.org/10.1515/znb-1984-0620 |
| ISSN: | 1865-7117 |
| ISSN: | 0932-0776 |
| Parent Title (German): | Zeitschrift für Naturforschung, B |
| Publisher: | Verlag der Zeitschrift für Naturforschung |
| Place of publication: | Tübingen |
| Document Type: | Article |
| Language: | German |
| Date of Publication (online): | 2014/06/02 |
| Year of first Publication: | 1984 |
| Publishing Institution: | Universitätsbibliothek Johann Christian Senckenberg |
| Release Date: | 2024/01/10 |
| Tag: | Carbonyl Complexes; ESR Spectra; Electrochemistry; Molecular Orbitals; Substituent Effects |
| Volume: | 39.1984 |
| Issue: | 6 |
| Page Number: | 7 |
| First Page: | 801 |
| Last Page: | 807 |
| Institutes: | Biochemie, Chemie und Pharmazie / Biochemie und Chemie |
| Dewey Decimal Classification: | 5 Naturwissenschaften und Mathematik / 54 Chemie / 540 Chemie und zugeordnete Wissenschaften |
| Sammlungen: | Universitätspublikationen |
| Licence (German): |  Creative Commons - Namensnennung-Nicht kommerziell-Keine Bearbeitung 3.0 |
