Velocity modulation infrared laser spectroscopy of negative ions

The ν3, ν3+ν1-ν1, ν3+ν2-ν2, and ν3+2ν 2-2ν2 bands of cyanate (NCO-)

Martin H W Gruebele, Mark Polak, Richard J. Saykally

Research output: Contribution to journalArticle

Abstract

We have measured 132 transitions in the v3 (CN stretching) fundamental and the corresponding bending and stretching hotbands of the cyanate anion, ranging from P(52) to R(66), with a tunable diode laser using the velocity modulation technique. The spectra were fit to the standard linear triatomic molecule rotation-vibration Hamiltonian, yielding effective molecular parameters for the (0000), (0110), (0200), (1000), (0001), (0111), (0201), and (1001) states. The equilibrium rotational constant was determined to be Be=0.385 933(116) cm-1. A comparison with condensed phase results is presented. As previously oberved for N3-, cyanate is detected with high vibrational excitation in the bending mode, most likely as a consequence of the formation mechanism.

Original languageEnglish (US)
Pages (from-to)6631-6636
Number of pages6
JournalThe Journal of chemical physics
Volume86
Issue number12
StatePublished - 1986
Externally publishedYes

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Cyanates
velocity modulation
cyanates
Laser spectroscopy
Infrared lasers
laser spectroscopy
infrared lasers
negative ions
Stretching
Infrared spectroscopy
Negative ions
infrared spectroscopy
Modulation
Hamiltonians
Bending (forming)
triatomic molecules
Anions
Semiconductor lasers
semiconductor lasers
anions

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Velocity modulation infrared laser spectroscopy of negative ions : The ν3, ν3+ν1-ν1, ν3+ν2-ν2, and ν3+2ν 2-2ν2 bands of cyanate (NCO-). / Gruebele, Martin H W; Polak, Mark; Saykally, Richard J.

In: The Journal of chemical physics, Vol. 86, No. 12, 1986, p. 6631-6636.

Research output: Contribution to journalArticle

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