Patent ID: 7417006

Claim:
A salt of formula (I) [HE o R 1 3 ] + [T 1 T 2 ] − (I) wherein E o is a nitrogen or phosphorous atom; R 1 , equal to or different from each other, are selected from the group consisting of linear and branched, saturated and unsaturated, C 1 –C 30 alkyl, C 6 –C 20 aryl, C 7 –C 20 arylalkyl and C 7 –C 20 alkylaryl groups, optionally containing O, S, N, P, Si or halogen atoms, or two R 1 form one C 4 –C 7 ring, optionally containing O, S, N, P or Si atoms that optionally bear substituents; T 1 is a Lewis acid that forms a complex with T 2 , T 1 having formula (II) MtR 2 3 (II) wherein Mt is an element belonging to Group 13 of the Periodic Table of the Elements (IUPAC); R 2 , equal to or different from each other, are selected from the group consisting of halogen, halogenated C 6 –C 20 aryl and halogenated C 7 –C 20 alkylaryl groups; two R 2 groups can also form with the element Mt one condensed ring; T 2 is a moiety of formula (III) wherein R 3 , R 4 , R 5 and R 6 , equal to or different from each other, are selected from the group consisting of hydrogen, halogen, linear and branched, saturated and unsaturated, C 1 –C 10 alkyl, C 6 –C 20 aryl, C 7 –C 20 arylalkyl and C 7 –C 20 alkylaryl groups, optionally containing O, S, N, P, Si or halogen atoms, or two or more adjacent substituents R 3 , R 4 , R 5 and R 6 form one or more C 4 –C 7 rings, optionally containing O, S, N, P or Si atoms, that optionally bear substituents; with the proviso that at least one of the R 3 , R 4 , R 5 and R 6 is different from hydrogen.