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A four-coordinate thionitrosyl complex of vanadium.
Ba L Tran1, Rick Thompson, Soumya Ghosh
1Department of Chemistry, Indiana University, 800 E. Kirkwood Avenue, Bloomington, IN, USA.
Chemical Communications (Cambridge, England)
|February 27, 2013
Summary
Researchers synthesized the first vanadium thionitrosyl complex, [(nacnac)V(NS)(OAr)], by reacting elemental sulfur with a vanadium nitride precursor. Structural and computational analyses confirmed an extended π-resonance within the VNS unit, featuring a nearly linear thionitrosyl ligand.
Area of Science:
- Inorganic Chemistry
- Organometallic Chemistry
- Materials Science
Background:
- Vanadium nitride complexes are crucial in catalysis and materials science.
- Thionitrosyl ligands (NS) are less explored in vanadium chemistry compared to other transition metals.
- Understanding ligand bonding in vanadium complexes is key to designing new functional materials.
Purpose of the Study:
- To synthesize and characterize the first thionitrosyl complex of vanadium.
- To investigate the electronic structure and bonding of the thionitrosyl ligand in the vanadium complex.
- To explore the reactivity of vanadium nitride precursors with elemental sulfur.
Main Methods:
- Synthesis of the vanadium thionitrosyl complex [(nacnac)V(NS)(OAr)] from a vanadium nitride precursor and elemental sulfur.
- Single crystal X-ray diffraction for detailed structural elucidation.
- Density Functional Theory (DFT) calculations to analyze electronic structure and bonding.
Main Results:
- Successful synthesis of the novel vanadium thionitrosyl complex [(nacnac)V(NS)(OAr)].
- X-ray diffraction confirmed the molecular structure, highlighting the coordination of the thionitrosyl ligand.
- DFT calculations revealed an extended π-resonance across the VNS moiety, resulting in an almost linear thionitrosyl ligand.
Conclusions:
- The study reports the first example of a vanadium thionitrosyl complex.
- The thionitrosyl ligand exhibits significant π-backbonding and an unusual linear geometry due to extended resonance.
- This work opens new avenues for exploring vanadium-sulfur-nitrogen chemistry and its potential applications.
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