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Sulfur tetrafluoride is a chemical compound with the formula S F 4. It is a colorless corrosive gas that releases dangerous hydrogen fluoride gas upon exposure to water or moisture. Sulfur tetrafluoride is a useful reagent for the preparation of organofluorine compounds , [ 3 ] some of which are important in the pharmaceutical and specialty ...
Thionyl tetrafluoride, also known as sulfur tetrafluoride oxide, is an inorganic compound with the formula S O F 4. It is a colorless gas. The shape of the molecule is a distorted trigonal bipyramid, with the oxygen found on the equator. The atoms on the equator have shorter bond lengths than the fluorine atoms on the axis.
A tetrafluoride is a chemical compound with four fluorines in its formula. ... Sulfur tetrafluoride, SF 4, a gas at standard conditions; Tellurium tetrafluoride, ...
The related compound FSSSF 3 has a similar structure, but with an extra sulfur atom in the chain. Thiothionyltetrafluoride, S=SF 4 may exist as a gas. It is less energetically favourable to FSSF 3 by 37 kJ/mol, but has a high energy barrier of 267 kJ/mol. [10] However it may disproportionate rapidly to sulfur and sulfur tetrafluoride. [10]
The usual reagent is sulfur tetrafluoride: RCO 2 H + SF 4 → RCF 3 + SO 2 + HF. A more convenient alternative to SF 4 is the diethylaminosulfur trifluoride, which is a liquid whereas SF 4 is a corrosive gas: [19] [20] C 6 H 5 CHO + R 2 NSF 3 → C 6 H 5 CHF 2 + "R 2 NSOF"
Sulfur tetrafluoride is the premier example of a molecule with the disphenoidal molecular geometry (see image at upper right). The following compounds and ions have disphenoidal geometry: [ 5 ] SF 4
The mechanism of fluorination by DAST parallels that of sulfur tetrafluoride. Attack of the hydroxyl group of the substrate on sulfur and elimination of hydrogen fluoride lead to an alkoxyaminosulfur difluoride intermediate. Nucleophilic attack by fluoride, either by an S N 1 [5] or S N 2 [6] pathway, leads to the product. Although clean ...
The 3-center 4-electron (3c–4e) bond is a model used to explain bonding in certain hypervalent molecules such as tetratomic and hexatomic interhalogen compounds, sulfur tetrafluoride, the xenon fluorides, and the bifluoride ion.