Abstract The solvolyses by trifluoroethanoic (“trifluoroacetic” TFA) acid of several known and new thiocyanates have been studied using proton magnetic resonance. For the organic linkage isomers of RNCS (R= alkyl groups) isothiocyanates react (via N-alkyl monothiocarbamato trifluoroethanoates) to form alkylamines RNH 2, whereas the thiocyanates RSCN yield thiols, RSH and ammonia. The coordinated thiocyanates include ...