Physical Chemistry Chemical Physics · 2006 · 29 citations · 19 references
Natural SciencesChemistryPhysicsMolecular PhysicsPhysical ChemistrySpectroscopyInfrared SpectroscopyMolecular DynamicsMolecular SymmetryMolecular ThermodynamicsMolecular VibrationVibrational StructureCluster FormationCluster Temperature ProfilesInfrared Absorption SpectraInfrared SpectraIsomeric State IdentificationStructural RelaxationTemperature Effects On SpectraVibrational Spectroscopy Simulations
We have measured the isomeric transition between the energetically lowest lying isomers of S6 and C2-symmetry of (CH3OH)6. The clusters are size-selected by deflection in collisions with He, and the isomers are identified by their infrared spectra of the OH-stretching vibration. The measurements are carried out at three source temperatures 253, 300 and 373 K which correspond to the cluster temperatures 93, 106 and 135 K. The latter ones are estimated by a relaxation model that accounts for the cluster formation and the energy released by the condensation. The transition takes place at a cluster temperature of about 102 K which is in agreement with the Molecular Dynamics simulation of such a transition at about 117 K using a realistic model potential.
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On the representatation of orientation space
Denis J. Evans · Molecular Physics · 1977 · 424 citations
Negative Heat Capacity for a Cluster of 147 Sodium Atoms
Martin Schmidt, Robert Kusche, Thomas Hippler et al. · Physical Review Letters · 2001 · 330 citations