| abstract |
The present invention relates to sulfur-free transition metal isocyanate-based ionic liquids, a process for their preparation and their use. The sulfur-free transition metal isocyanate-based ionic liquids have the general formula (I), A d + I [M II (NCO) 4 ] (1) wherein M II is a divalent metal cation selected from manganese 2+ , nickel 2+ and cobalt 2+ ; d is one or two; I means one or two; and A is selected from quaternary ammonium cations, quaternary phosphonium cations, imidazolium cations, N, N '- (CH 2 ) n -diimidazolium cations, pyridinium cations, N, N' - (CH 2 ) n -dipyridinium cations, pyrrolidinium cations. and bipyridinium cations, in which n is an integer between 1 and 5 and wherein d, A and I are selected such that the total charge for A d + I is 2+. |