GAS-PHASE REACTIONS OF SOME POSITIVE-IONS WITH ATOMIC AND MOLECULAR NITROGEN

The reactions of the cations CN+, HCN+, HCNH+, HC3N+, HC3NH+, H-3(+), H2O+, H3O+, N-2(+), CO+, HCO+, O-2(+), CO2+, HCO2+ and C2H2+ with atom ic and molecular nitrogen have been characterized using a selected ion flow tube (SIFT) operating at room temperature. Rate coefficient and branching ratio data are reported for all ion-neutral reactions studie d. Constraints arising from spin conservation considerations are found to be unimportant in cation-N atom processes. (C) 1998 American Insti tute of Physics. [S0021-9606(98)01044-7].