420-45-1Relevant articles and documents
Synthesis, Physical Characterisation and Chemical Properties of Methylsulphur Trifluoride, CH3SF3
Downs, Anthony J.,Forster, Alan M.,McGrady, G. Sean,Taylor, Ben J.
, p. 81 - 87 (1991)
Methylsulphur trifluoride, CH3SF3, has been synthesised by the reaction between AgF2 and a solution of CH3SCl3F.It is a clear, viscous liquid which attacks glass, is hydrolysed rapidly, and decomposes at ambient termperatures to give CH2FSF3 and CH2FSSCH2F.The compound has been characterised by its 1H and 19F NMR and vibrational spectra, and a partial vibrational assignment is proposed.The chemistry of CH3SF3 is akin to that of SF4.Thus, it functions as a fluoride ion donor much more readily than as a fluoride ion acceptor.It reacts with Pyrex glass to give CH3S(O)F, is hydrolysed to CH3S(O)OH, and effects O-F exchange with acetone to zield 2,2-difluoropropane.
ELECTROCHEMICAL FLUORINATION USING POROUS NICKEL AND FOAM NICKEL ANODES
Drakesmith, F. G.,Hughes, D. A.
, p. 103 - 134 (2007/10/02)
This work set out to examine the reasons behind some of the problems associated with ECF, namely, lack of reproducibility, low chemical yields, poor selectivity and low current densities, with a view to ameliorating these shortcomings and making the process more attractive to the chemical industry.The approach was to study the chemistry under controlled conditions of potential, reactant concentration, temperature, etc., and to analyse the results in terms of product structure, distribution and yield.Two distinct stages in the process were identified, i) the conditioning of the electrode, and, ii) the fluorination of the organic substrate.These stages are described in detail in relation to two model systems investigated, the fluorination of propene using porous and foam nickel anodes, and the fluorination of the octanoyl chloride using nickel foam anodes.The scales of experiments ranged from 100 ml to 100 l cell capacities.General conclusions are derived and recommendations made for the more efficient operation of the process.
Methylenesulfurtetrafluoride, CH2=SF4, Formation, Structure, and Chemistry
Kleemann, Gert,Seppelt, Konrad
, p. 645 - 658 (2007/10/02)
The preparation of methylenesulfurtetrafluoride, CH2=SF4, is achieved by bromine-lithium exchange on Br-CH2-SF5 at low temperatures and subsequent lithium fluoride elimination.CH2=SF4 is a colourless gas with b.p. -19 deg C and m.p. -139 deg C.The structure is essentially trigonal-bipyramidal, the methylene group occupying an equatorial position.The protons lie in the plane of the axial fluorine atoms.The molecule is rigid.The carbon-sulfur bond is best described as strong double bond with only little ylidic polarity. - The double bond undergoes numerous addition reactions with polar species under formation of cis-configurated X-CH2-SF4-Y systems.Less often elimination of SF4 and formation of carbene is observed.