Related Experiment Video
Updated: Jun 19, 2026

Synthesis of Antiviral Tetrahydrocarbazole Derivatives by Photochemical and Acid-catalyzed C-H Functionalization via Intermediate Peroxides (CHIPS)
Published on: June 20, 2014
Syntheses, characterization, and computational study of WSF4 and WSF4 x CH3CN
Jared Nieboer1, William Hillary, Xin Yu
1Department of Chemistry and Biochemistry, The University of Lethbridge, Lethbridge, Alberta T1K 3M4, Canada.
Abstract:
A new and improved synthetic route to WSF(4) was developed from the reaction of WF(6) and Sb(2)S(3) in anhydrous HF. Tungsten sulfide tetrafluoride was characterized by Raman and (19)F NMR spectroscopy for the first time in HF solvent. Both studies provided evidence for its monomeric form in HF solution. In the solid state, WSF(4) was also characterized by Raman and infrared spectroscopy. The WSF(4) x CH(3)CN adduct was prepared from WSF(4) and CH(3)CN in anhydrous HF solvent and by the direct combination of WSF(4) with excess CH(3)CN, and was characterized by Raman and infrared spectroscopy in the solid state and (19)F NMR spectroscopy in CH(3)CN solution. The crystal structure of WSF(4) x CH(3)CN was obtained and showed that CH(3)CN coordinates to W in an end-on fashion and trans to the W-S bond. Quantum-chemical calculations using B3LYP and PBE1PBE methods were used to calculate the gas-phase geometries and vibrational frequencies of WSF(4) and WSF(4) x CH(3)CN.
Related Concept Videos
Chirality at Nitrogen, Phosphorus, and Sulfur
A consequence of chirality is the need for enantiomeric resolution. While this is theoretically possible for all...
Prochirality
Stereoisomerism of Cyclic Compounds
Stability of Substituted Cyclohexanes
The two chair conformations of cyclohexanes undergo rapid interconversion at room temperature. Both forms have identical energies and stabilities, each comprising equal amounts of the equilibrium mixture. Replacing a hydrogen atom with a functional group makes the two conformations energetically non-equivalent.
For example, in...

