Kinetics of the gas phase reactions of the ion C5H5Fe+ with substituted pyridines

The gas phase reactions between the ion C5H5Fe+ and some substituted pyridines have been studied by ion trap mass spectrometry. Two different reactions have been observed: a simple addition process, found in almost all the cases, and a reaction with loss of HX found with the halogen substituted pyridines. The kinetics of these reactions has been studied and possible structures for the transition states are proposed.