15min:
METAL-MOLECULE INTERACTIONS IN In+-NH2(CH3), In+-NH(CH3)2, In+-N(CH3)3 and THEIR NEUTRAL RADICALS.

GRETCHEN K. ROTHSCHOPF, SHENGGANG LI AND DONG-SHENG YANG, Department of Chemistry, University of Kentucky, Lexington, KY 40506-0055.

The indium-amine radicals were produced by reactions of laser-vaporized metal atoms with methylamines seeded in helium gas and identified with time-of-flight mass spectrometry. Metal-ligand interactions of the positive ion and neutral species were probed using ZEKE spectroscopy. From the ZEKE spectra, ionization energies and metal-ligand stretching frequencies were determined for the three complexes, and bending frequencies were obtained for the monomethylamine and dimethylamine species. In comparison with InNH3, these methylated complexes have lower ionization energies and stronger metal-ligand binding.