Optoacoustic spectroscopy with a tunable cw dye laser: forbidden transitions in some unstable sulphur compounds

Dixon, Ronald; Haner, David A.; Webster, C.R.

doi:10.1016/0301-0104(77)87003-1

Cited by 25 publications

(2 citation statements)

References 39 publications

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“…In fact a very weak band is observed at the calculated origin frequency (vide infra). The origin band has been observed in the A-2 transitions of H2CS and D2CS (15,16) in which cases the observed intensity was attributed to magnetic dipole transitions similar to that seen in H,CO (17). However, the origin band has never been observed in the A-X system of C1,CS (3, 11).…”

Section: Resultsmentioning

confidence: 80%

Vibronic analysis of the spectrum of Br₂CS

Simard¹,

Steer²

1985

Can. J. Chem.

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[Formula: see text] fluorescence excitation and emission spectra of Br2CS have been recorded. A vibronic analysis shows that the molecule is non-planar in the [Formula: see text] state with an equilibrium out-of-plane angle of 13° and a barrier to inversion of l64 cm−1. Upper state vibrational frequencies of modes 1, 2, 3, 4, and 6 have been obtained. Comparisons with other tetraatomic thiocarbonyls support the assignments. A ground state C—Br dissociation energy of 52.3 kcal mol−1 has been obtained from the onset of diffuseness in the [Formula: see text] spectra. A search for phosphorescence proved unsuccessful.

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Section: Resultsmentioning

confidence: 80%

Vibronic analysis of the spectrum of Br₂CS

Simard¹,

Steer²

1985

Can. J. Chem.

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“…The availability of dye lasers as an excitation source capable of a high intensity flux within narrow, tunable bandwidths makes photoacoustic detection a promising method for the investigation of the very weak molecular absorption spectra. Dixon et al (3) have measured photoacoustic spectra of forbidden transitions in some unstable gaseous sulfur compounds with a tunable CW dye laser. Recently, Lahmann et al (4) and the present authors (5) have successfully applied this method to the ultra trace analysis of liquid samples with an argon ion laser.…”

Section: Literature Citedmentioning

confidence: 99%