Rotational Spectra of the Less Common Isotopomers, Electric Dipole Moment and the Double Minimum Inversion Potential of H2O···HCl

2000 ◽  
Vol 104 (30) ◽  
pp. 6970-6978 ◽  
Author(s):  
Z. Kisiel ◽  
B. A. Pietrewicz ◽  
P. W. Fowler ◽  
A. C. Legon ◽  
E. Steiner
Keyword(s):  
Dipole Moment ◽  
Electric Dipole Moment ◽  
Electric Dipole ◽  
Rotational Spectra

Adiabatische Korrektur der Born-Oppenheimer-Näherung beim GeS und GeSe / Adiabatic Correction of the Born-Oppenheimer Approximation for GeS and GeSe

1976 ◽  
Vol 31 (3-4) ◽  
pp. 374-380 ◽  
Author(s):  
W. U. Stieda ◽  
E. Tiemann ◽  
T. Törring ◽  
J. Hoeft
Keyword(s):  
Dipole Moment ◽  
High Precision ◽  
Electric Dipole Moment ◽  
Electric Dipole ◽  
Rotational Constant ◽  
Frequency Range ◽  
Rotational Spectra ◽  
Oppenheimer Approximation

Abstract The rotational spectra of GeS and GeSe were measured in the frequency range of 66 GHz to 110 GHz with high precision. The breakdown of the Born-Oppenheimer approximation was observed for the rotational constant yol. With the known molecular 37-factor and the electric dipole moment the adiabatic part of the Born-Oppenheimer correction can be extracted from the primary observa-tion on y01. The adiabatic correction is very similar in both molecules but differs from the results in the earlier measurements on PbS.

Rotational Spectra, Molecular Structure, and Electric Dipole Moment of PropanethialS-Oxide

1999 ◽  
Vol 103 (25) ◽  
pp. 4948-4954 ◽  
Author(s):  
Jennifer Z. Gillies ◽  
Elizabeth Cotter ◽  
Charles W. Gillies ◽  
Hugh E. Warner ◽  
Eric Block
Keyword(s):  
Molecular Structure ◽  
Dipole Moment ◽  
Electric Dipole Moment ◽  
Electric Dipole ◽  
Rotational Spectra

Spectroscopic investigations of hydrogen bonding interactions in the gas phase. IV. The heterodimer H 2 0 • • • HF: the observation and analysis of its microwave rotational spectrum and the determination of its molecular geometry and electric dipole moment

1980 ◽  
Vol 372 (1750) ◽  
pp. 441-451 ◽  
Keyword(s):  
Hydrogen Bonding ◽  
Dipole Moment ◽  
Electric Dipole Moment ◽  
Electric Dipole ◽  
Heavy Atom ◽  
Molecular Geometry ◽  
Rotational Spectrum ◽  
Rotational Constants ◽  
Rotational Spectra ◽  
Out Of Plane

The microwave rotational spectra of the isotopic species H 2 18 0 • • • H 19 F, H 2180 • • • H 19 F, HD 16 0 • •. HF, D 2 16 0 • • • DF and D 2 18 0 • • • DF of the hydrogen bonded heterodimer formed between water and hydrogen fluoride have been observed and analysed to give rotational constants. Evidence from the effects of nuclear spin statistical weights in the spectra leads to the conclusion that the dimer H 20 • • • HF is either planar with C2V symmetry or pyramidal with Cg symmetry but with a low barrier to inversion of the configuration at oxygen. r0-values of the heavy atom distance 0 * • • F have been derived from the observed rotational constants, the value for H 2160 • • • H 19 F being 2.662 Aj. The measured values of electric dipole moment in the vibrational ground state and in the state having v^{0) = 1 are 4.07 and 3.80 D respectively. These values show that excitation of the out-of-plane hydrogen bonding bending mode vP(0) leads to a large decrease in the dipole moment.

ROTATIONAL SPECTRA OF RbF BY THE ELECTRIC RESONANCE METHOD

1958 ◽  
Vol 36 (2) ◽  
pp. 171-183 ◽  
Author(s):  
H. Lew ◽  
D. Morris ◽  
F. E. Geiger Jr. ◽  
J. T. Eisinger
Keyword(s):  
Dipole Moment ◽  
Electric Dipole Moment ◽  
Internuclear Distance ◽  
Electric Dipole ◽  
Molecular Beam ◽  
Resonance Method ◽  
Mass Ratio ◽  
Electric Resonance ◽  
Rotational States ◽  
Rotational Spectra

Transitions between the J = 0 and J = 1 rotational states of RbF have been measured by means of the molecular beam electric resonance method. The following rotational constants have been determined (all frequencies in Mc./sec):[Formula: see text]The quadrupole interaction constants −eqQ/h in the J = 1 state are found to be[Formula: see text]The equilibrium internuclear distance is re = (2.26554 ± 0.00005) × 10−8 cm. The electric dipole moment of Rb85F in the ν = 0 state is μ = (8.80 ± 0.10) × 10−18 e.s.u. The mass ratio of the Rb isotopes is M85/M87 = 0.9770148 ± 0.0000052.

Sign in / Sign up

Export Citation Format

Share Document