127808-37-1

Basic information

• Product Name: Methanesulfonic acid, trifluoro-, silylene ester
• CAS NO: 127808-37-1
• Molecular Formula: C2H2F6O6S2Si
• Molecular Weight: 328.242
• Mol File: 127808-37-1.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: Methanesulfonic acid, trifluoro-, silylene ester(CAS DataBase Reference)
• NIST Chemistry Reference: Methanesulfonic acid, trifluoro-, silylene ester(127808-37-1)
• EPA Substance Registry System: Methanesulfonic acid, trifluoro-, silylene ester(127808-37-1)

Safety Data

• Hazardous Substances Data: 127808-37-1(Hazardous Substances Data)

Upstream product

• 617-86-7 triethylsilane 
• 66469-45-2 Silantetrayltetrakis(trifluormethansulfonat) 

Downstream Products

• 99798-82-0 bis(2,4,6-trimethyphenyl)silane 
• 169304-46-5 bis<2,4,6-tris(trifluoromethy)lphenyl>fluorosilane 

Relevant articles and documents

Silicon Tetrakis(trifluoromethanesulfonate): A Simple Neutral Silane Acting as a Soft and Hard Lewis Superacid

A facile synthesis and isolation of pristine silicon tetrakis(trifluoromethanesulfonate), Si(OTf)4, is reported, acting as the first neutral silicon-based Lewis superacid suitable towards soft and hard Lewis bases. Its OTf groups have a dual function: they are excellent leaving groups and modulate the degree of reactivity towards soft and hard Lewis bases. Exposed to soft Lewis donors, Si(OTf)4 leads to [L2Si(OTf)4] complexes (L=isocyanide, thioether and carbonyl compounds) with retention of all Si?OTf bonds. In contrast, it can cleave C?X bonds (X=F, Cl) of hard organic Lewis bases with a high tendency to form SiX4 (X=F, Cl) after halide/triflate exchange. Most notable, Si(OTf)4 allows a gentle oxydefluorination of mono- and bis(trifluoromethyl)benzenes, resulting in the formation of the corresponding benzoylium species, which are stabilized by the weakly coordinating [Si(OTf)6] dianion.