Vibrationally induced nuclear quadrupole coupling in the v/sub 3/ = 1 state of /sup 189/OsO/sub 4/

Journal Article · Sun Nov 15 04:00:00 EST 1987 · J. Chem. Phys.; (United States)

OSTI ID:6119223

Scappini, F; Kreiner, W A; Frye, J M; Oka, T

Electric nuclear quadrupole hyperfine structure arising from a quadrupolar nucleus at the center of tetrahedral molecules, such as /sup 189/OsO/sub 4/, is symmetry forbidden. However, through vibration--rotation distortion a small nuclear quadrupole coupling is induced. The hyperfine structure due to the vibrationally induced eqQ has been measured for a number of P- and R-branch transitions in the ..nu../sub 3/ fundamental of /sup 189/OsO/sub 4/, by using inverse Lamb dip spectroscopy. Microwave modulation sidebands of CO/sub 2/ laser lines have been used as the tunable infrared radiation. From the analysis of the observed hyperfine structure patterns, the values of the scalar and tensor coupling constants have been determined to be chi/sup V//sub s/ = -4.103 +- 0.048 MHz and chi/sup V//sub t/ = -3.090 +- 0.059 MHz.

• Research Organization: Department of Chemistry and Department of Astronomy and Astrophysics, The University of Chicago, Chicago, Illinois 60637
• OSTI ID: 6119223
• Journal Information: J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 87:10; ISSN JCPSA
• Country of Publication: United States
• Language: English

Related Subjects

640302* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
CHALCOGENIDES
ENERGY LEVELS
EVEN-ODD NUCLEI
EXCITED STATES
HEAVY NUCLEI
HOURS LIVING RADIOISOTOPES
HYPERFINE STRUCTURE
INFRARED SPECTRA
INTERNAL CONVERSION RADIOISOTOPES
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
NUCLEI
OSMIUM 189
OSMIUM COMPOUNDS
OSMIUM ISOTOPES
OSMIUM OXIDES
OXIDES
OXYGEN COMPOUNDS
QUADRUPOLE MOMENTS
RADIOISOTOPES
REFRACTORY METAL COMPOUNDS
SPECTRA
STABLE ISOTOPES
TRANSITION ELEMENT COMPOUNDS
VIBRATIONAL STATES