Excited States of the Naphthalene Molecule. II. Further Studies on the First Singlet—Singlet Transition

Donald S. McClure

doi:10.1063/1.1700845

Excited States of the Naphthalene Molecule. II. Further Studies on the First Singlet—Singlet Transition

The Journal of Chemical Physics ◽

10.1063/1.1700845 ◽

1956 ◽

Vol 24 (1) ◽

pp. 1-12 ◽

Cited By ~ 91

Author(s):

Donald S. McClure

Keyword(s):

Excited States ◽

Naphthalene Molecule ◽

Singlet Transition

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Excited States of the Naphthalene Molecule. I. Symmetry Properties of the First Two Excited Singlet States

The Journal of Chemical Physics ◽

10.1063/1.1739870 ◽

1954 ◽

Vol 22 (10) ◽

pp. 1668-1675 ◽

Cited By ~ 224

Author(s):

Donald S. McClure

Keyword(s):

Excited States ◽

Excited Singlet ◽

Singlet States ◽

Symmetry Properties ◽

Naphthalene Molecule ◽

Excited Singlet States

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SPECTRA AND STRUCTURES OF THE FREE HSiCl AND HSiBr RADICALS

Canadian Journal of Physics ◽

10.1139/p64-038 ◽

1964 ◽

Vol 42 (3) ◽

pp. 395-432 ◽

Cited By ~ 78

Author(s):

G. Herzberg ◽

R. D. Verma

Keyword(s):

Fine Structure ◽

Band Structure ◽

Excited States ◽

Ground State ◽

Electronic Transition ◽

Flash Photolysis ◽

Geometrical Structure ◽

Lower State ◽

Triplet Splitting ◽

Singlet Transition

Intense spectra of HSiCl and HSiBr in the region 6000 to 4100 Å have been obtained in the flash photolysis of SiH3Cl and SiH3Br, both in absorption and in fluorescence. They consist of progressions of bands with very wide K structures and very narrow J structures. A detailed fine structure analysis of these bands has been carried out and the geometrical structure of the molecules in both the upper and the lower states has been established. For the lower state, probably the ground state of HSiCl, it is found that[Formula: see text]and similarly for HSiBr[Formula: see text]In the excited states the angles are appreciably larger (see Table XI).A striking feature of the band structure in both HSiCl and HSiBr is the occurrence of branches of subbands with ΔK = ± 2, in addition to those with ΔK = ± 1 and 0, and furthermore, the presence of a subband with K = 0 in the branch with ΔK = 0. These anomalies can be accounted for by the assumption that the electronic transition is a triplet–singlet transition, more specifically 3A″–1A′ (or possibly 1A′–3A″). However, no triplet splitting has been resolved in the spectrum.

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Vuv Spectra Y to Mo

International Astronomical Union Colloquium ◽

10.1017/s0252921100107808 ◽

1988 ◽

Vol 102 ◽

pp. 239

Author(s):

M.S.Z. Chaghtai

Keyword(s):

Excited States ◽

Spectral Analyses ◽

Vuv Spectra

Using R.D. Cowan’s computations (1979) and parametric calculations of Meinders et al (1982), old analyses are thoroughly revised and extended at Aligarh, of Zr III by Khan et al (1981), of Nb IV by Shujauddin et Chaghtai (1985), of Mo V by Tauheed at al (1985). Cabeza et al (1986) confirmed the last one largely.Extensive studies have been reported of the 1–e spectra, Zr IV (Rahimullah et al 1980; Acquista and Reader 1980), Nb V (Shujauddin et al 1982; Kagan et al 1981) and Mo VI (Edlén et al 1985). Some interacting 4p54d2levels of these spectra have been reported from our laboratory, also.Detailed spectral analyses of transitions between excited states have furnished complete energy values for J ≠ 1 levels of these spectra during 1970s and 80s. Shujauddin et al (1982) have worked out Nb VI and Tauheed et al (1984) Mo VII from our lab, while Khan et al (1981) share the work on Zr V with Reader and Acquista (1979).

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