Coordination chemistry of (c-C5H5)Fe+ in the gas phase at 294 +/- 3 K: reactions with the inorganic ligands H-2, H2O, NH3, CO, N-2, NO, CO2, N2O, andNO2

Experimental results are reported for primary and higher-order gas-phase re actions of (c-C5H5)Fe+ with H-2, H2O,NH3, CO, N-2, NO, CO2, N2O, and NO2. R eaction rate coefficients and product distributions were measured with the selected-ion how tube technique operating at 294 +/- 3 K and a helium buffe r-gas pressure of 0.35 +/- 0.01 Torr. The measurements provide intrinsic ef ficiencies for ligation and lead to intrinsic coordination numbers based on ligation kinetics. The extent of sequential ligation was found to be stron gly dependent on the nature of the ligand. Single ligation of the (c-C5H5)F e+ cation was observed with H-2, N-2, N2O, and CO2 whereas multiple ligatio n was observed with NO, NO2, CO, H2O, and NH3. With NO2 oxygen-atom transfe r was the dominant reaction channel. Structures have been proposed for the ligated ions and relative bond energies were investigated using multicollis ion induced dissociation. (C) 2001 Elsevier Science B.V.