Copper(II) triflate

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Copper(II) triflate
Copper(II) triflate
CAS number 34946-82-2 YesY
PubChem 2734996
ChemSpider 2016731 YesY
Jmol-3D images Image 1
Molecular formula C2CuF6O6S2
Molar mass 361.68 g mol−1
Appearance white to pale blue powder
Solubility in water very soluble, hygroscopic
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
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Infobox references

Copper (II) triflate is the copper(II) salt of trifluoromethanesulfonic acid (known simply as triflic acid) which has a chemical formula of Cu(OSO2CF3)2. This substance, first reported in 1972,[1] is a powerful Lewis acid. It is used as a catalyst in several organic reactions, such as the Diels-Alder reaction[2] and cyclopropanation reactions[3] (much like Rhodium(II) acetate).


  1. ^ Jenkins, C.L.; Kochi, J.K. (1972). "Solvolytic Routes via Alkylcopper Intermediates in the Electron-Transfer Oxidation of Alkyl Radicals". Journal of the American Chemical Society 94 (3): 843–855. doi:10.1021/ja00758a024. 
  2. ^ Evans, D.A.; Miller, S.J.; Lectka, T.; von Matt, P. (1999). "Chiral Bis(oxazoline)copper(II) Complexes as Lewis Acid Catalysts for the Enantioselective Diels−Alder Reaction". Journal of the American Chemical Society 121 (33): 7559–7573. doi:10.1021/ja991190k. 
  3. ^ Salomon, R.G.; Kochi, J.K (1973). "Copper(I) catalysis in cyclopropanations with diazo compounds. Role of olefin coordination". Journal of the American Chemical Society 95 (10): 3300–3310. doi:10.1021/ja00791a038.