Comparative electron impact and fast atom bombardment mass spectrometric studies of some HMPA adducts of phenyltin and phenyllead halides and studies of strong hydrogen bonding by FAB-MS

摘要

The fragmentation patterns and mass spectra of some phenyl tin and-lead halide adducts with hexamethylphosphoramide are compared bysubjecting them t~ electron impact and fast atom bombardment ionizationin a mass spectrometer. This comparison is restricted to themetal-containing ions. Ligand-exchange mechanisms of some of themetal-containing species are explored by FAB-MS. Several moisturesensitiveorgano-metallics and H-bonded systems have been examined byFAB for attempted characterization, but without any success. Scavengingand trapping of water molecules by complex aggregates in solutions ofquaternary ammonium fluorides and hydroxides are investigated by FAB tocomplement previous NMR-studies.