Abstract
The redox properties of dicarba[2]ruthenocenophane were investigated using cyclic voltammetry (CV), and the results compared to those reported for ruthenocene. In the presence of the weakly-coordinating supporting electrolyte the latter exhibited a partially reversible oxidation wave corresponding to the formation of the ruthenocenium ion. This ruthenocenium ion exists in equilibrium with the metal metal-bonded dimer dication, as demonstrated in situ by voltammetry and NMR spectroscopy experiments. Under identical experimental conditions, CV scans of dicarba[2]ruthenocenophane show that it undergoes an irreversible one-electron oxidation. Bulk anodic electrolysis confirmed the one-electron oxidation of dicarba[2]ruthenocenophane , its exclusive conversion to the single product, and the subsequent quantitative reduction of that product back to dicarba[2]ruthenocenophane. Unlike the highly temperature and concentration-dependent voltammetry of ruthenocene, that of dicarba[2]ruthenocenophane varies little with changes in the medium.
Original language | English |
---|---|
Pages (from-to) | 8000-8003 |
Number of pages | 4 |
Journal | Chemistry - A European Journal |
Volume | 18 |
Issue number | 26 |
DOIs | |
Publication status | Published - Jun 25 2012 |
Keywords
- dimerisation
- electrochemistry
- metal-metal bonding
- metallocenophanes
- strained compounds
ASJC Scopus subject areas
- Catalysis
- Organic Chemistry