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Updated: Jul 19, 2026
11:10
Atomic Layer Deposition of Vanadium Dioxide and a Temperature-dependent Optical Model
Published on: May 23, 2018
Highly-oxidised, sulfur-rich, mixed-valence vanadium(IV/V) complexes
Michelle K Taylor1, David J Evans, Charles G Young
1School of Chemistry, University of Melbourne, Victoria 3010, Australia.
Chemical Communications (Cambridge, England)
|October 13, 2006
Summary
New vanadium-sulfur complexes were synthesized and characterized. These highly-oxidized, sulfur-rich compounds display unique electronic properties and mixed-valence behavior, offering insights into vanadium chemistry.
Area of Science:
- Inorganic Chemistry
- Coordination Chemistry
- Materials Science
Background:
- Vanadium complexes with sulfur-containing ligands are of interest due to their diverse oxidation states and potential applications.
- Understanding the electronic structure and magnetic properties of polynuclear vanadium complexes is crucial for developing new functional materials.
Purpose of the Study:
- To synthesize and characterize novel, highly-oxidized, sulfur-rich vanadium complexes.
- To investigate the electronic properties and structural features of these complexes, particularly their mixed-valence behavior.
Main Methods:
- Synthesis of vanadium complexes using [V(2)(micro-S(2))(2)(S(2)CNR(2))(4)] and NOBF(4).
- Characterization using Electron Paramagnetic Resonance (EPR) spectroscopy.
- Structural analysis to determine oxidation states and electronic configuration.
Main Results:
- Successful synthesis of highly-oxidized, sulfur-rich V(iv/v) complexes, [V(2)(micro-S(2))(2)(S(2)CNR(2))(4)]BF(4).
- Observation of 15-line EPR spectra, indicative of paramagnetic species.
- Structural data consistent with Class III mixed-valence behavior in the vanadium centers.
Conclusions:
- The reaction conditions allow for the formation of stable, highly-oxidized vanadium-sulfur complexes.
- The observed EPR spectra and structural features confirm the presence of intramolecular electron delocalization characteristic of Class III mixed-valence systems.
- These findings contribute to the understanding of redox activity and electronic communication in polynuclear vanadium compounds.
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