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, is a powerful Lewis acid. It is used as a catalyst in several organic reactions, such as the Diels-Alder reaction and cyclopropanation reactions (much like Rhodium(II) acetate).

CAS：34946-82-2
中文别名：三氟甲烷磺酸铜;三氟甲烷磺酸铜(Ⅱ);三氟甲基磺酸铜;copper,trifluoromethanesulfonate;三氟甲烷磺酸铜(II);
英文别名：Copper(II) triflate (Cu(OTf)2;Copper(II) trifluoromethanesulfonate;Copper(II) triflate;Cupric trifluoromethanesulfonate;Copper (II) Trifluoromethanesulfonate;Trifluoromethanesulfonic acid copper(II) salt;
分子式：C2CuF6O6S2
分子量：361.684
精确质量：360.834
Psa：103.5
Logp：2.7929

EINECS号：252-300-8

外观与性状：固体
熔点：530 °C (分解)

安全说明：S26; S36/37/39; S45; S27
危险类别码：R34
危险品运输编码：UN 3261 8/PG 2
海关编码：2904909090