ChemInform Abstract: The Submillimeter-Wave Rotational Spectrum of Propyne: Analysis of the Ground and the Low-Lying Excited Vibrational States.

Abstract The submillimeter-wave rotational spectrum of the PS radical in the electronic and vibrational ground state (X2 ΠI/2 , X2Π3/2) was recorded with the Cologne terahertz spectrometer in the fre-quency region between 540 GHz and 1.07 THz, covering rotational quantum numbers from J = 30.5 to 60.5. The PS radical has been produced by discharging PSCl3 buffered with Ar. For all transitions the Λ-doubling was resolved for both the 2ΠI/2 and 2Π3/2 states. For some transitions with ΔF = 0 the hyperfine structure (hfs) caused by the P-atom could partially be resolved even for rather high J values. Analysis of the complete rotational data set of PS allows the derivation of a full set of molecular parameters, including the rotational constants B, D, H, the fine-structure constants A,γ , Dγ , the parameters for the Λ-doubling p, Dp , q, and the magnetic hyperfine constants a, b, c, d, CI. All parameters have been determined, whereby a, c, and the nuclear spin rotation-constant CI were obtained for the first time.

Download Full-text

Submillimeter-wave spectroscopy of a 1Δ SO in excited vibrational states produced by 193 nm photolysis of Cl2SO

Chemical Physics Letters ◽

10.1016/0009-2614(87)80105-7 ◽

1987 ◽

Vol 141 (1-2) ◽

pp. 129-132 ◽

Cited By ~ 10

Author(s):

Yasuki Endo ◽

Hideto Kanamori ◽

Eizi Hirota

Keyword(s):

Submillimeter Wave ◽

Vibrational States ◽

193 Nm

Download Full-text

Das Rotationsspektrum des JF/ Rotational Spectrum of IF

Zeitschrift für Naturforschung A ◽

10.1515/zna-1973-0904 ◽

1973 ◽

Vol 28 (9) ◽

pp. 1405-1407 ◽

Cited By ~ 27

Author(s):

E. Tiemann ◽

J. Hoeft ◽

T. Törring

Keyword(s):

Hyperfine Structure ◽

Microwave Discharge ◽

Rotational Spectrum ◽

Vibrational States ◽

Rotational Transitions

IF was produced by microwave discharge of l2 and C6F10(CFa)2. The rotational transitions J=0→1 and 1→2 in the vibrational states ν = 0, 1, 2 were observed. The analysis of the hyperfine structure yields the following hfs constants:127I: e qv Q = (-3440.89+5.47 (ν+½) ±0.20) MHz,cI = ( + 90 ±10) kHz.

Download Full-text

Microwave Rotational Spectrum of Indium Monofluoride

Zeitschrift für Naturforschung A ◽

10.1515/zna-1969-0423 ◽

1969 ◽

Vol 24 (4) ◽

pp. 634-636 ◽

Cited By ~ 9

Author(s):

F. J. Lovas ◽

T. Törring

Keyword(s):

Spin Rotation ◽

Coupling Constants ◽

Rotational Spectrum ◽

Coupling Constant ◽

Vibrational States ◽

Molecular Parameters ◽

Microwave Rotational Spectrum ◽

Quadrupole Coupling ◽

Rotational Transitions

Abstract The rotational transitions J = 1 → 2 and 2 → 3 were measured in 115In19F. From these spectra the following molecular parameters have been determined: the Dunham-coefficients Y01, Y11 and Y02, the quadrupole coupling constants, eqQ, in the ν = 0 and v = 1 vibrational states as well as the spin-rotation coupling constant cIn.

Download Full-text