scholarly journals The effects of proton tunneling, 14N quadrupole coupling, and methyl internal rotations in the microwave spectrum of ethyl methyl amine

2020 ◽  
Vol 153 (18) ◽  
pp. 184308
Author(s):  
Kenneth J. Koziol ◽  
Wolfgang Stahl ◽  
Ha Vinh Lam Nguyen
Keyword(s):  
Microwave Spectrum ◽  
Proton Tunneling ◽  
Methyl Amine ◽  
Internal Rotations ◽  
Ethyl Methyl ◽  
Quadrupole Coupling

scholarly journals The effects of two internal rotations in the microwave spectrum of ethyl methyl ketone

2014 ◽  
Vol 140 (21) ◽  
pp. 214303 ◽  
Author(s):  
Ha Vinh Lam Nguyen ◽  
Vinh Van ◽  
Wolfgang Stahl ◽  
Isabelle Kleiner
Keyword(s):  
Methyl Ketone ◽  
Microwave Spectrum ◽  
Internal Rotations ◽  
Ethyl Methyl ◽  
Ethyl Methyl Ketone

Microwave spectrum, dipole moment and quadrupole coupling constants of 1,2,5-selenadiazole

1967 ◽  
Vol 1 (9) ◽  
pp. 379-381 ◽  
Author(s):  
G.L. Blackman ◽  
R.D. Brown ◽  
F.R. Burden ◽  
J.E. Kent
Keyword(s):  
Dipole Moment ◽  
Microwave Spectrum ◽  
Coupling Constants ◽  
Quadrupole Coupling

scholarly journals The Microwave Spectrum, Structure, Dipole Moment and Quadrupole Coupling in 1-Pyrrolidinecarboxaldehyde.

1988 ◽  
Vol 42a ◽  
pp. 603-610 ◽  
Author(s):  
Sung Guen Lee ◽  
Ki Woon Hwang ◽  
Robert K. Bohn ◽  
Kurt W. Hillig II ◽  
Robert L. Kuczkowski ◽  
...  
Keyword(s):  
Dipole Moment ◽  
Microwave Spectrum ◽  
Quadrupole Coupling ◽  
Spectrum Structure

THE MICROWAVE SPECTRUM OF DICHLOROFLUOROMETHANE

1964 ◽  
Vol 42 (4) ◽  
pp. 720-730 ◽  
Author(s):  
David B. McLay
Keyword(s):  
Bond Length ◽  
Hyperfine Structure ◽  
Charge Distribution ◽  
Tensor Component ◽  
Microwave Spectrum ◽  
Frequency Range ◽  
Rotational Constants ◽  
Coupling Tensor ◽  
Quadrupole Coupling ◽  
Out Of Plane

The microwave spectra of C12HFCl235 and C12HFCl35Cl37 have been measured in the frequency range from 10 to 35 Gc/s. Enough R branch and Q branch rotational transitions have been measured in each case to determine the rotational constants A = 6988.73 ± 0.02, B = 3307.25 ± 0.05, and C = 2350.03 ± 0.02 Mc/s for CHFCl235 and A = 6943.37 ± 0.05, B = 3219.58 ± 0.04, and C = 2300.57 ± 0.06 Mc/s for CHFCl35Cl37. The out-of-plane coordinate of Cl35 in the symmetric species has been deduced to be 1.4350 ± 0.0006 Å and, if the C–Cl bond length is assumed to be 1.750 ± 0.005 Å, then the Cl–C–Cl angle can be calculated to be 112.2 ± 0.5°. The analysis of the hyperfine structure has led to the values eQVaa = −41.0 ± 0.2 Mc/s, eQVbb = +11.37 ± 0.13 Mc/s, and eQVcc = 29.62 ± 0.13 Mc/s for the diagonal components of the quadrupole coupling tensor along the principal inertial axes. The results are consistent with a cylindrically symmetrical charge distribution around the C–Cl bond and a quadrupole coupling tensor component of eQVzz = −76.75 Mc/s in the direction of the bond. The only impurity in the sample, obtained from the Matheson Company, seems to have been a trace of HCCF for which the J = 0 → 1 transition has been measured.

Sign in / Sign up

Export Citation Format

Share Document