Zinc triflate

Zinc trifluoromethanesulfonate or zinc triflate is the zinc salt of trifluoromethanesulfonic acid. It is commonly used as a Lewis acid catalyst, e.g. in silylations.^[1]

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Zinc triflate

Names
IUPAC name zinc trifluoromethanesulfonate
Identifiers
CAS Number	54010-75-2 N
3D model (JSmol)	Interactive image
ChemSpider	94493 Y
ECHA InfoCard	100.053.548
PubChem CID	104671
CompTox Dashboard (EPA)	DTXSID7068899
InChI InChI=1S/2CHF3O3S.Zn/c2*2-1(3,4)8(5,6)7;/h2*(H,5,6,7);/q;;+2/p-2 Y Key: CITILBVTAYEWKR-UHFFFAOYSA-L Y InChI=1/2CHF3O3S.Zn/c2*2-1(3,4)8(5,6)7;/h2*(H,5,6,7);/q;;+2/p-2 Key: CITILBVTAYEWKR-NUQVWONBAZ
SMILES [Zn+2].FC(F)(F)S([O-])(=O)=O.FC(F)(F)S([O-])(=O)=O
Properties
Chemical formula	C2F6O6S2Zn
Molar mass	363.51 g·mol−1
Appearance	White powder
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). N verify (what is YN ?) Infobox references

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A white powder, zinc triflate is commercially available, though some workers have experienced inconsistent results with zinc triflate from different sources.^[2][3] If desired, it may be prepared from reacting trifluoromethanesulfonic acid with zinc metal in acetonitrile,^[4] or with zinc carbonate in methanol:^[5]

Zn + 2 HOTf → Zn(OTf)₂ + H₂

ZnCO₃ + 2 HOTf → Zn(OTf)₂ + H₂O + CO₂ (OTf = CF₃SO₃)