Reactions of Aluminum Oxide Cluster Cations with Ethane: A Mass-Spectrometric and Vibrational Spectroscopy Study.

The pathways for the reactions of aluminum oxide cluster ions with ethane have been measured. For selected ions (AlO, AlO , AlO , AlO ) the structure of the collisionally-stabilized reaction intermediates were explored by measuring the photodissociation vibrational spectra from 2600 cm-3100 cm. Density functional theory was used to calculate features of the potential energy surfaces for the reactions and the vibrational spectra of intermediates.

How the nature and charge of metal cations affect vibrations in acetone solvent molecules.

Vibrational spectra of a series of gas-phase metal 1+ and 2+ ions solvated by acetone molecules are collected to investigate how the metal charge, number of solvent molecules and nature of the metal affect the acetone. The spectra of Cu(Ace)(N), Cu(Ace), and M(Ace), where M = Co, Ni, Cu, and Zn are measured photodissociation by monitoring fragment ion signal as a function of IR wavenumber. The spectra show a red shift of the CO stretch and a blue shift of the C-C antisymmetric stretch.

Al Activates Acetone to Form Pinacolate.

The interaction between aluminum cations and acetone is studied in the gas phase via photodissociation vibrational spectroscopy from 1100 to 2000 cm. Spectra of Al(acetone)(N) and ions with the stoichiometry of Al(acetone) ( = 2-5) were measured. The experimental results are compared to DFT calculated vibrational spectra to determine the structures of the complexes.