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 CD3OD is more efficient than CH3OH 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 modes 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 10(12) to 10(13) W/cm(2) is accompanied by extensive intracluster bimolecular chemistry.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1992
Accession Number
ADA251058

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
  • New York
  • Photochemistry
  • Photodissociation
  • Photoionization
  • Physical Chemistry
  • Spectra

Fields of Study

  • Physics

Readers

  • Molecular Photonics/Laser Physics
  • Organic Chemistry

Technology Areas

  • AI & ML
  • Directed Energy