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Showing 1 to 6 of 6 for “"Fermi resonance"”.
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A matrix isolation study of transition metal halides and their structure.
… of VF5, VF4, VF3, and VF2, with VF4 undergoing Fermi Resonance. This is the first time that VF4 and VF2, consistent with a linear structure, have been isolated within a matrix.Work conducted upon palladium led to the isolation of numerous palladium fluorides, identified by the palladium isotope …
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Path-integral studies of quantum statistical effects in vibrational spectroscopy
… (temperature quasi-independent) behaviour of the Fermi resonance splitting, which is underestimated by path-integral methods analogously to overtone band intensities.
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Interpretation of Infrared and Raman Spectra Using Driven Molecular Dynamics Method
… anharmonic spectral features, in particular, Fermi resonance between <em>gerade</em> symmetric N-N stretch and the <em>ungerade</em> N<sup>...</sup>H<sup>+...</sup>N bend overtone. Raman activity in the proton transfer region shows broad anharmonic vibrational features that correspond to an …
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Raman and fluorescence spectra of azabenzenes
… Raman scattering, and especially so in the pre-resonance Raman region. The pre-resonance effect is an increase of intensity of a Raman line as the exciting frequency approaches that of the weak electronic transition.</p> <p>The ��<sub>10a</sub> vibration of pyrazine is known to vibronically mix …
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A theoretical study of molecular crystals
… frequencies were also obtained and the Fermi resonance between of the bending overtone and symmetric stretching fundamental was observed for the theoretical solid. The agreement with the experimental Fermi dyad peak was reproduced correctly at pressures reaching 10 GPa. An embedded …
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Vibrational many-body methods for molecules and extended systems
"Vibrational many-body methods for molecules and extended systems have been developed that can account for the effects of anharmonicity in the potential energy surfaces (PESs) on energies and other observable properties. For molecules, we present a general scheme to calculate anharmonic vibrational …