Photodynamics within (CH3OH)nCr(CO)6 Heteroclusters: Observation of an Isotope Effect

Abstract

We have recently examined the multiphoton dissociation and ionization dynamics of mixed van der Waals heteroclusters of Cr(CO)6 solvated by methanol, and have inferred from photoion fragmentation branching ratios that CD30D is more efficient than CH30H in relaxing excess internal energy of the nascent photoion via intracluster energy transfer. Multiphoton ionization is suggested to proceed via single photon photodissociation of the solvated Cr(CO)6, followed by two-photon ionization of the coordinatively unsaturated photoproduct. Excess energy in the internal mode of the nascent photoion appears to be disposed of via non-statistical, mode-specific transfer to the internal degrees of freedom of an adjacent solvent molecule within the cluster. Photoionization using laser power densities on the order of 1012 to 1013 W/cm2 is accompanied by extensive intracluster bimolecular chemistry.

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Document Details

Document Type
Technical Report
Publication Date
May 29, 1992
Accession Number
ADA251529

Entities

People

  • James F. Garvey
  • William R. Peifer

Organizations

  • University at Buffalo

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Chemical Kinetics
  • Chemical Reactions
  • Chemistry
  • Dissociation
  • Dye Lasers
  • Energy Transfer
  • Ionization
  • Liquid Dye Lasers
  • Mass Spectra
  • Molecular Orbital Theory
  • Molecules
  • Photochemistry
  • Photodissociation
  • Photoionization
  • Physical Chemistry
  • Spectra
  • Spectroscopy

Fields of Study

  • Physics

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  • Optical Physics and Photonics.
  • Organic Chemistry
  • Quantum Chemistry

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  • Directed Energy