EXPERIMENTAL DETERMINATION OF THE DIPOLE MOMENTS OF THE DEGENERATE STATES OF NH

1965 ◽  
Vol 43 (10) ◽  
pp. 1766-1775 ◽  
Author(s):  
T. A. R. Irwin ◽  
F. W. Dalby
Keyword(s):  
Experimental Determination ◽  
Electric Dipole ◽  
Atomic Hydrogen ◽  
High Field ◽  
Dipole Moments ◽  
Field Region ◽  
Hydrogen Line ◽  
Electric Dipole Moments ◽  
Degenerate States

Light from the high-field region of a Lo Surdo discharge in ammonia was focused on the slit of a stigmatic spectrograph. Spectrograms of the 3 360 and 3 240 Å bands of NH and the hydrogen line Hβ were taken simultaneously. From observations of the molecular and atomic hydrogen Stark splittings and intensities the electric dipole moments of the degenerate states of NH were determined to be μ(A3Π) = (1.31 ± 0.03), μ(c1Π) = (1.70 ± 0.07), μ (a1Δ) = 1.49 ± 0.06) Debye, where the signs of μ(c1Π.) and μ(a1Δ) are the same.

THE CONFORMATIONS OF THE DIASTEREOMERIC 2,5-DIMETHYL-2,5-DIMETHOXY-3,4-DIPHENYLHEXANES

1959 ◽  
Vol 37 (7) ◽  
pp. 1132-1145 ◽  
Author(s):  
Henry Sawatzky ◽  
George K. White ◽  
George F Wright
Keyword(s):  
Carbon Tetrachloride ◽  
Experimental Determination ◽  
Electric Dipole ◽  
Dipole Moments ◽  
Free Rotation ◽  
Electric Dipole Moments ◽  
Meso Form ◽  
The Moment ◽  
Increasing Temperature

The electric dipole moments of six possible rotamers comprising the two diastereomeric forms of 2,5-dimethyl-2,5-dimethoxy-3,4-diphenylhexane have been calculated vectorially. Comparison of these values with the experimental determination of polarization in benzene and carbon tetrachloride shows that only two of the rotamers of the dd,ll form and only one of the meso form are present in significant amount. The moment of the dd,ll diastereomer decreases with increasing temperature but that of the meso form is almost invariant. It is probable that all six central linkages in these diastereomers are hindered from free rotation.

Molecular g-Values, Magnetic Susceptibility Anisotropies, Molecular Quadrupole Moments and Second Moments of the Electron Charge Distribution in Ethyleneoxide and Pyridine Isotopes. An Attempt to Determine the Sign of the Electric Dipole Moment

1976 ◽  
Vol 31 (3-4) ◽  
pp. 265-271 ◽  
Author(s):  
E. Hamer ◽  
D. H. Sutter
Keyword(s):  
Dipole Moment ◽  
Electric Dipole ◽  
High Field ◽  
Dipole Moments ◽  
Zeeman Effect ◽  
Quadrupole Moments ◽  
Electron Charge ◽  
Electric Dipole Moments ◽  
Second Moments ◽  
Electron Charge Distribution

The high-field first and second order Zeeman effect has been observed in Ethyleneoxidein order to determine the sign of the electric dipole moments from the g-values of different isotopes. The experimental data indicate that in Ethyleneoxide the negative end is at the Oxygen while in Pyridine the result is not conclusive. The effect of vibrations is discussed in some detail and it is concluded that the vibrational dependance of the g-values should be accounted for if the sign of the dipole moment is determined from Zeeman data (at least if H ↔ D substitutions are involved).

Extrapolation formulas for the determination of the electric dipole moments in solutions of polar liquids

1978 ◽  
Vol 13 (6) ◽  
pp. 640-644
Author(s):  
S. B. Bulgarevich ◽  
A. A. Polunin ◽  
O. A. Osipov ◽  
V. A. Kogan
Keyword(s):  
Electric Dipole ◽  
Dipole Moments ◽  
Electric Dipole Moments ◽  
Polar Liquids
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