Open AccessElectron-Impact Spectroscopy Investigation of Diketene
Author(s) -
Isaac M. Xavier,
K. N. Walzl,
Maria Rebecca Giorgi
Publication year - 2001
Publication title -
the journal of physical chemistry a
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.756
H-Index - 235
eISSN - 1520-5215
pISSN - 1089-5639
DOI - 10.1021/jp003335b
Subject(s) - diketene , spectroscopy , rydberg formula , scattering , atomic physics , electron energy loss spectroscopy , electron spectroscopy , electron scattering , electron , atomic electron transition , materials science , chemistry , molecular physics , physics , optics , spectral line , ionization , ion , organic chemistry , quantum mechanics , astronomy
The electronic spectrum of diketene was investigated by the technique of variable-angle, electron energy loss spectroscopy, using the impact energies of 25 and 50 eV, and varying the scattering angle from 10° to 90°. Transitions have been observed at 4.36, 5.89, 6.88, and 7.84 eV. On the basis of the intensity variation of these transitions with impact energy and scattering angle, and through analogy with simpler molecules, the first three are tentatively assigned to an n → π* transition, a π → σ*(3s) Rydberg transition, and a π → π* transition.
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