Rotationskonstante und Kernquadrupolkopplungskonstante des Trimethylehlorsilans, bestimmt aus Mikrowellenspektren / Rotational Constant and Nuclear Quadrupole Coupling Constant of Trimethylchlorosilane, Determined by Microwave Spectrum

1973 ◽  
Vol 28 (7) ◽  
pp. 1230-1232
Author(s):  
Werner Zeil ◽  
Bernhard Haas

The microwave spectrum of trimethylchlorosilane has been investigated between 8 and 20 GHz. The quadrupole splitting of the K = 0 lines of the transitions J = 2 → 3 and 3 → 4 have been determined. The quadrupole coupling constant of the Cl-35 atom is determined to -34.701 MHz, and the rotational constant is determined to B0 = 2197.382 MHz.

1986 ◽  
Vol 41 (11) ◽  
pp. 1307-1310
Author(s):  
Eckhard Fliege ◽  
Helmut Dreizler ◽  
A. Peter Cox

The rotational transitions J' - J" = 1 - 0 , 2 - 1 , 3 - 2 , and 4 - 3 of pivalonitrile have been measured in the frequency range of 5 - 2 2 GHz with a microwave Fourier transform spectrometer. The 14N nuclear quadrupole coupling constant, e q Q, as well as the centrifugal distortion parameters, DJ and DJK, have been determined to be: e q Q = - 4.221(15) MHz; DJ = 0.349(56) kHz, DJK = - 3.68(15) kHz. The rotational constant B0 was fixed with high precision: B0 = 2749.9093(13) MHz. Nitrogen-14 quadrupole coupling in pivalonitrile is compared with that in other cyano compounds.


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