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Resonant two-photon ionization and fluorescence excitation studies of o, m-difluorobenzene(centered ellipsis)Ar. Spectral shifts and intermolecular vibrations (1998)

Lu, Wenyun ; Hu, Yihua ; Yang, Shihe

College Park, Md. : American Institute of Physics (AIP)

The Journal of Chemical Physics 108 (1998), S. 12-19

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ISSN: 1089-7690

Source: AIP Digital Archive

Topics: Physics , Chemistry and Pharmacology

Notes: Resonant two-photon ionization (R2PI) spectra of the van der Waals (vdW) complexes 1,2-difluorobenzene(centered ellipsis)Ar (o-DFB(centered ellipsis)Ar) and 1,3-difluorobenzene(centered ellipsis)Ar (m-DFB(centered ellipsis)Ar) through the S1←S0 transition revealed a number of bands near the origin 000. All these bands are assigned to the low-frequency intermolecular vibrations. Quantum calculations using the method of linear-combination of three-dimensional harmonic oscillator products (LCHOP) were carried out to derive the intermolecular vibrational energy levels. Detailed assignments of the intermolecular vibrational modes are accomplished with the help of the quantum calculations and the comparison with the available data on related systems, e.g., C6H6(centered ellipsis)Ar and p-DFB(centered ellipsis)Ar. Fluorescence excitation method was used to derive the spectral shifts of intramolecular bands (S1←S0) of o, m-DFB upon complexation with Ar. © 1998 American Institute of Physics.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1063/1.475390

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