Gas-Phase Chemistry of Ti+ to Zn+ with Butyl Isothiocyanate

Using a complete set of ²H-labeled isotopomers, the gas-phase reactions of Ti⁺ to Zn⁺ with butyl isothio-cyanate are studied. The main product for most of the metal ions is MHNCS⁺ formed by an ion/dipole mechanism. Exceptions are Cr⁺, which yields significant amounts of H₂ and H₂S loss, Mn⁺, which is the only ion that does not form MHNCS⁺ at all but produces mainly C₂H₄ and C₃H₆, and Zn⁺, which predominantly reacts by charge transfer.