The Microwave Spectrum of 4-Methylisothiazole

Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review

Autoren

  • H. W. Nicolaisen
  • J. U. Grabow
  • N. Heineking
  • W. Stahl

Organisationseinheiten

Externe Organisationen

  • Christian-Albrechts-Universität zu Kiel (CAU)
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Details

OriginalspracheEnglisch
Seiten (von - bis)635-638
Seitenumfang4
FachzeitschriftZeitschrift fur Naturforschung - Section A Journal of Physical Sciences
Jahrgang46
Ausgabenummer7
PublikationsstatusVeröffentlicht - 1 Juli 1991

Abstract

The microwave spectrum of 4-methylisothiazole was assigned by means of a pulsed molecular beam microwave Fourier transform spectrometer. Analysis of the spectrum yielded the rotational constants A = 7370.642(31) MHz, B = 2515.8461 (30) MHz, C= 1897.2863(33) MHz, a threefold barrier to internal rotation of the methyl group of V3= 3170.81 (130) GHz = 105.7669(430) cm 1, a momentum of inertia of the methyl group of Ia = 3.16769 (130) amu • Å2and an angle between internal rotor axis and principal a-axis of (Θ = 5.406(38)°. The nitrogen quadrupole coupling constants were determined to be %+ = %bb + %cc —1-4822(14) MHz, % — %bb~Xcc= -14353(25) MHz and zah= -3.16(12) MHz.

ASJC Scopus Sachgebiete

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The Microwave Spectrum of 4-Methylisothiazole. / Nicolaisen, H. W.; Grabow, J. U.; Heineking, N. et al.
in: Zeitschrift fur Naturforschung - Section A Journal of Physical Sciences, Jahrgang 46, Nr. 7, 01.07.1991, S. 635-638.

Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review

Nicolaisen HW, Grabow JU, Heineking N, Stahl W. The Microwave Spectrum of 4-Methylisothiazole. Zeitschrift fur Naturforschung - Section A Journal of Physical Sciences. 1991 Jul 1;46(7):635-638. doi: 10.1515/zna-1991-0714
Nicolaisen, H. W. ; Grabow, J. U. ; Heineking, N. et al. / The Microwave Spectrum of 4-Methylisothiazole. in: Zeitschrift fur Naturforschung - Section A Journal of Physical Sciences. 1991 ; Jahrgang 46, Nr. 7. S. 635-638.
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abstract = "The microwave spectrum of 4-methylisothiazole was assigned by means of a pulsed molecular beam microwave Fourier transform spectrometer. Analysis of the spectrum yielded the rotational constants A = 7370.642(31) MHz, B = 2515.8461 (30) MHz, C= 1897.2863(33) MHz, a threefold barrier to internal rotation of the methyl group of V3= 3170.81 (130) GHz = 105.7669(430) cm 1, a momentum of inertia of the methyl group of Ia = 3.16769 (130) amu • {\AA}2and an angle between internal rotor axis and principal a-axis of (Θ = 5.406(38)°. The nitrogen quadrupole coupling constants were determined to be %+ = %bb + %cc —1-4822(14) MHz, % — %bb~Xcc= -14353(25) MHz and zah= -3.16(12) MHz.",
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Download

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AU - Nicolaisen, H. W.

AU - Grabow, J. U.

AU - Heineking, N.

AU - Stahl, W.

N1 - Funding Information: concerning the off-diagonal elements of the /-tensor. Financial support of the Deutsche Forschungsgemeinschaft, the Land Schleswig-Holstein and the Fonds der Chemischen Industrie is gratefully acknowledged.

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N2 - The microwave spectrum of 4-methylisothiazole was assigned by means of a pulsed molecular beam microwave Fourier transform spectrometer. Analysis of the spectrum yielded the rotational constants A = 7370.642(31) MHz, B = 2515.8461 (30) MHz, C= 1897.2863(33) MHz, a threefold barrier to internal rotation of the methyl group of V3= 3170.81 (130) GHz = 105.7669(430) cm 1, a momentum of inertia of the methyl group of Ia = 3.16769 (130) amu • Å2and an angle between internal rotor axis and principal a-axis of (Θ = 5.406(38)°. The nitrogen quadrupole coupling constants were determined to be %+ = %bb + %cc —1-4822(14) MHz, % — %bb~Xcc= -14353(25) MHz and zah= -3.16(12) MHz.

AB - The microwave spectrum of 4-methylisothiazole was assigned by means of a pulsed molecular beam microwave Fourier transform spectrometer. Analysis of the spectrum yielded the rotational constants A = 7370.642(31) MHz, B = 2515.8461 (30) MHz, C= 1897.2863(33) MHz, a threefold barrier to internal rotation of the methyl group of V3= 3170.81 (130) GHz = 105.7669(430) cm 1, a momentum of inertia of the methyl group of Ia = 3.16769 (130) amu • Å2and an angle between internal rotor axis and principal a-axis of (Θ = 5.406(38)°. The nitrogen quadrupole coupling constants were determined to be %+ = %bb + %cc —1-4822(14) MHz, % — %bb~Xcc= -14353(25) MHz and zah= -3.16(12) MHz.

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