753-79-7

Basic information

• Product Name: Methylschwefelpentafluorid
• Synonyms: Methylschwefelpentafluorid
• CAS NO: 753-79-7
• Molecular Weight: 142.093
• Mol File: 753-79-7.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: Methylschwefelpentafluorid(CAS DataBase Reference)
• NIST Chemistry Reference: Methylschwefelpentafluorid(753-79-7)
• EPA Substance Registry System: Methylschwefelpentafluorid(753-79-7)

Safety Data

• Hazardous Substances Data: 753-79-7(Hazardous Substances Data)

Upstream product

• 66793-25-7 methylenesulfurtetrafluoride 

Downstream Products

• 59970-36-4 Methoxysulfinyl cation 

Relevant articles and documents

Methylenesulfurtetrafluoride, CH2=SF4, Formation, Structure, and Chemistry

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.