Deuterium isotope effects on the dipole moment and polarizability of HCl and NH/sub 3/
A previously described adaptation of the conventional Debye procedure for the direct determination of small dipole moment and polarizability differences between two polar gases is applied to the isotopic pairs DCl-HCl and ND/sub 3/-NH/sub 3/. The dipole moment difference obtained for the first isotopic pair, by using the Debye-Van Vleck equation for electric susceptibility, ..mu..(DCl) - ..mu..(HCl) = 0.005/sub 5/ +/- 0.0002 D, is consistent with published spectroscopically determined values of ..mu../sub 00/(DCl) and ..mu../sub 00/(HCl), while that obtained by using the classical Debye equation is not. For the second pair, use of the Debye-Van Vleck equation, along with a correction for thermal population of vibrationally excited levels, is shown to be essential and yields ..mu..(ND)/sub 3/ - ..mu..(NH/sub 3/) = +0.013/sub 5/ +/- 0.001 D and ..cap alpha..(ND/sub 3/) - ..cap alpha..(NH/sub 3/) = -(2.2 +/- 1.7) x 10/sup -26/ cm/sup 3/.
- Research Organization:
- Technion-Israel Inst. of Tech., Haifa
- OSTI ID:
- 7060040
- Journal Information:
- J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 86:5; ISSN JPCHA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400202* -- Isotope Effects
Isotope Exchange
& Isotope Separation
AMMONIA
BOND LENGTHS
CHEMICAL REACTION YIELD
DATA
DEBYE LENGTH
DEUTERIUM
DIELECTRIC PROPERTIES
DIMENSIONS
DIPOLE MOMENTS
ELECTRICAL PROPERTIES
ENERGY LEVELS
EXCITED STATES
EXPERIMENTAL DATA
GRAPHS
HARMONICS
HIGH TEMPERATURE
HYDRIDES
HYDROCHLORIC ACID
HYDROGEN COMPOUNDS
HYDROGEN ISOTOPES
INFORMATION
INORGANIC ACIDS
ISOTOPE EFFECTS
ISOTOPES
LENGTH
LIGHT NUCLEI
MEDIUM TEMPERATURE
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NUCLEI
NUMERICAL DATA
ODD-ODD NUCLEI
OSCILLATIONS
PHYSICAL PROPERTIES
POLARIZABILITY
STABLE ISOTOPES
STATISTICAL DATA
VIBRATIONAL STATES
YIELDS