Rotational spectrum and structure of the Ar/sub 3/--HCl symmetric top
The Ar/sub 3/--HCl tetramer has been identified via the observation of its microwave rotational spectrum using the pulsed nozzle Fourier transform technique. The rotational spectroscopic constants of the ground vibrational state have been obtained for the /sup 35/Cl//sup 37/Cl isotopes from measurements of the J = 1..-->..2 to J = 4..-->..5 transitions and their hyperfine structure. For Ar/sub 3/--H/sup 35/Cl, the values found for B/sub 0/, D/sub J/, D/sub J//sub K/, and chi/sub aa/ are 843.8974(1) MHz, 2.333(2) and 1.818(6) kHz, and 31.006(5) MHz, respectively, and for Ar/sub 3/--H/sup 37/Cl, 825.9811(2) MHz, 2.211(5) and 1.940(12) kHz, and 24.481(8) MHz. The cluster is a symmetric top with the HCl along the C/sub 3/ axis, its H end directed towards the Ar/sub 3/ trimer. In its torsional oscillations, the HCl makes an average angle of 36.91/sup 0/ with the symmetry axis. The chlorine isotopic substitution leads to values of 3.8510 and 4.0024 A for the Ar--Ar and Ar--Cl distances. The results of the present study are compared with those reported earlier for the Ar/sub m/--HF (m = 1,2,3) and Ar/sub m/--HCl (m = 1,2) clusters.
- Research Organization:
- Noyes Chemical Laboratory, University of Illinois, Urbana, Illinois 61801
- OSTI ID:
- 6085347
- Journal Information:
- J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 87:8; ISSN JCPSA
- Country of Publication:
- United States
- Language:
- English
Similar Records
Calculations on the HCl--Ar van der Waals complex
THE SEPARATION TUBE. XXII. EFFECT OF THE MASS DISTRIBUTION IN THE THERMAL DIFFUSION BETWEEN Ar$sup 40$ AND HCl$sup 35$, HCl$sup 37$, DCl$sup 35$, AND DCl$sup 3$$sup 7$
Related Subjects
400201 -- Chemical & Physicochemical Properties
640302* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
ADDUCTS
ARGON
ARGON COMPLEXES
BOND ANGLE
BOND LENGTHS
CHLORINE 37
CHLORINE ISOTOPES
COMPLEXES
DIMENSIONS
ELEMENTS
ENERGY LEVELS
EXCITED STATES
FLUIDS
GASES
HYDROCHLORIC ACID
HYDROGEN COMPOUNDS
HYPERFINE STRUCTURE
INORGANIC ACIDS
ISOTOPE EFFECTS
ISOTOPES
LENGTH
LIGHT NUCLEI
MICROWAVE SPECTRA
MOLECULAR STRUCTURE
NONMETALS
NUCLEI
ODD-EVEN NUCLEI
RARE GASES
ROTATIONAL STATES
SPECTRA
STABLE ISOTOPES