Rotational spectrum and molecular constants of the diatomic GaCl in its electronic ground state1?+

1986 ◽  
Vol 4 (2) ◽  
pp. 189-193 ◽  
Author(s):  
J. Hoeft ◽  
K. P. R. Nair
Keyword(s):  
Rotational Spectrum ◽  
Molecular Constants ◽  
Electronic Ground

Millimetre-wave laboratory detection of H2COH+

1994 ◽  
Vol 72 (11-12) ◽  
pp. 1078-1081 ◽  
Author(s):  
D. Chomiak ◽  
A. Taleb-Bendiab ◽  
S. Civis ◽  
T. Amano
Keyword(s):  
Ground State ◽  
Molecular Clouds ◽  
Rotational Transition ◽  
Infrared Detection ◽  
Rotational Spectrum ◽  
Molecular Constants ◽  
Negative Glow ◽  
Millimetre Wave ◽  
Magnetically Confined ◽  
Interstellar Molecular Clouds

The ground-state rotational spectrum of protonated formaldehyde, H2COH+, has been identified and assigned following the infrared detection by Amano and Warner using a magnetically confined extended negative glow discharge as a production source. The molecular constants have been determined more accurately. These parameters provide the pure rotational transition frequencies that are accurate enough for radio astronomical searches for this ion in interstellar molecular clouds.

Die Mikrowellen-Rotationsspektren des AgCl, AgBr und AgJ

1971 ◽  
Vol 26 (2) ◽  
pp. 240-244 ◽  
Author(s):  
J. Hoeft ◽  
F. J. Lovas ◽  
E. Tiemann ◽  
T. Törring
Keyword(s):  
Coupling Constants ◽  
Rotational Spectrum ◽  
Vibrational States ◽  
Molecular Constants ◽  
Quadrupole Coupling ◽  
Rotational Transitions

The observation of the low lying rotational transitions J = 0 →1 of AgCl and J = 2→3 of AgBr resulted in improved quadrupole coupling constants: 107, 109Ag35Cl: e qν Q (35Cl) = -36,50 (10) MHz (ν=0,1); 107.109Ag79Br; e q0 Q(79Br) =297,10(15) MHz, e q1 Q (79Br) =297,65 (15) MHz. In con­trast to former measurements of KRISHER and NORRIS we obtained the following constants of 107Ag79Br: Y01 = 1943,6420 (50) MHz, Y11 = -7,0745(70) MHz, re = 2,393100(29) Å. The unknown rotational spectrum of AgJ was found. Measurements of the transition J = 3 →4 in four vibrational states resulted in the determination of the following molecular constants: Y01 = 1345,1105(25) MHz, Y11= -4,2389(30) MHz, Y21 = 1,70(80) kHz, Y0,=-0,2540(2) kHz; re = 2,544611 (31) Å; e q0 Q(127J) =-1062,17(40) MHz, e q1 Q(127J) = -1064,81 (40) MHz.

Millimeter Wave Rotational Spectrum and Molecular Constants of 31P14N

1972 ◽  
Vol 57 (3) ◽  
pp. 1106-1108 ◽  
Author(s):  
F. C. Wyse ◽  
E. L. Manson ◽  
W. Gordy
Keyword(s):  
Millimeter Wave ◽  
Rotational Spectrum ◽  
Molecular Constants

Rotational Spectrum, Molecular Constants, and Dipole Moment of theSynForm of Vinylphosphine

1996 ◽  
Vol 176 (1) ◽  
pp. 180-184 ◽  
Author(s):  
Pascal Dréan ◽  
Jean-Marcel Colmont ◽  
Alberto Lesarri ◽  
Juan Carlos López
Keyword(s):  
Dipole Moment ◽  
Rotational Spectrum ◽  
Molecular Constants

Millimeter-wave rotational spectrum and molecular constants of diatomic gallium bromide

1981 ◽  
Vol 80 (1) ◽  
pp. 149-152 ◽  
Author(s):  
K.P.Rajappan Nair ◽  
H.-U. Schütze-Pahlmann ◽  
J. Hoeft
Keyword(s):  
Millimeter Wave ◽  
Rotational Spectrum ◽  
Molecular Constants

THE RAMAN SPECTRUM OF FLUORINE

1951 ◽  
Vol 29 (2) ◽  
pp. 151-158 ◽  
Author(s):  
D. Andrychuk
Keyword(s):  
Raman Spectrum ◽  
Raman Spectra ◽  
Nuclear Spin ◽  
Ground State ◽  
Electronic Ground State ◽  
Rotational Spectrum ◽  
Fermi Statistics ◽  
Gaseous Fluorine ◽  
Electronic Ground

The rotational and vibrational Raman spectra of gaseous fluorine at 1 atm. pressure were obtained. From these spectra the constants of the molecule in the electronic ground state were determined to be:[Formula: see text]The intensity alternation in the rotational spectrum shows that the nuclear spin of fluorine is [Formula: see text] and that the F19 nuclei follow Fermi statistics.

CP's Triple-bond Strength Experienced in its THz Spectrum

1999 ◽  
Vol 54 (3-4) ◽  
pp. 187-190 ◽  
Author(s):  
H. Klein ◽  
E. Klisch ◽  
G. Winnewisser ◽  
A. Königshofen ◽  
J. Hahn
Keyword(s):  
Liquid Nitrogen Temperature ◽  
Submillimeter Wave ◽  
Frequency Region ◽  
Rotational Spectrum ◽  
Red Phosphorus ◽  
Centrifugal Distortion ◽  
Temperature Analysis ◽  
Molecular Constants ◽  
Quantum Numbers ◽  
Vibrational Ground State

The submillimeter-wave rotational spectrum of the CP radical in the electronic and vibrational ground state (X2Σ+) was recorded in the frequency region between 572 GHz and 1.05 THz, covering rotational quantum numbers from N = 11 up to 21. The CP radical has been produced by discharging CH4 over red phosphorus buffered with Ar at liquid nitrogen temperature. Analysis of the new rotational data of CP together with those available in the literature allows the derivation of an accurate set of molecular constants, including rotational, B0 = 23859.91521(28) MHz and the centrifugal distortion constant D0 = 39.8140(19) kHz, the fine structure and hyperfine structure parameters. The stiffness of the CP bond can be inferred by requiring only one distortion constant D0 to fit the measured rotational spectrum.

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