FORMATION OF METAL-CARBON BONDS VIA INSERTION REACTIONS IN GASEOUS NEGATIVE ION-MOLECULE REACTIONS

The negative ion mass spectra under chemical ionization conditions for a series of copper(II), nickel(II), and cobalt(II) Schiff base complexes have been measured. Reagent gases employed include methane, isobutane, and methane-d4. For all complexes, molecular negative ions were produced with all three reagent gases via secondary electron capture processes. Ion/molecule reactions between the molecular negative ion and the neutral reactant gas appear to be the dominant processes for the formation of secondary ions. The secondary reactions lead to the incorporation of the CH2 moiety into the nickel(II) complexes and the CH3 group into the cobalt(II) compounds. © 1979.