Abstract
Microwave and radio frequency spectra of ArSO3 and radio frequency spectra of N2SO3 are measured by molecular beam electric resonance spectroscopy. Both complexes are symmetric rotors. The spectroscopic constants determined for Ar32SO3 are B = 1449.089(5) MHz, DJ = 3.6(6) kHz, and μ = 0.2676(3) D. For Ar 34SO3, B = 1439.090(5) MHz. The stretching frequency of the weak Ar-S bond is 61.(5) cm-1, and the force constant is thus 0.059(10) mdyn/Å. The Ar-S bond length in ArSO3 is 3.350(1) Å. The Ar-S-O angle is found to be 90.5°(5), thereby indicating no significant out-of-plane distortion of the SO3 moiety. Preliminary assignment of the N2SO3 spectrum yields a dipole moment of 0.46(1) D. Electric deflection studies show that (SO3)2 and (SO3)3 are polar species, while Xe2SO 3 is not.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 137-141 |
| Number of pages | 5 |
| Journal | The Journal of Chemical Physics |
| Volume | 73 |
| Issue number | 1 |
| DOIs | |
| State | Published - Jan 1 1980 |
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Weakly bound complexes of sulfur trioxide : The structure of ArSO 3 and the dipole moment of N2SO3. / Bowen, K. H.; Leopold, K. R.; Chance, K. V.; Klemperer, W.
In: The Journal of Chemical Physics, Vol. 73, No. 1, 01.01.1980, p. 137-141.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Weakly bound complexes of sulfur trioxide
T2 - The structure of ArSO 3 and the dipole moment of N2SO3
AU - Bowen, K. H.
AU - Leopold, K. R.
AU - Chance, K. V.
AU - Klemperer, W.
PY - 1980/1/1
Y1 - 1980/1/1
N2 - Microwave and radio frequency spectra of ArSO3 and radio frequency spectra of N2SO3 are measured by molecular beam electric resonance spectroscopy. Both complexes are symmetric rotors. The spectroscopic constants determined for Ar32SO3 are B = 1449.089(5) MHz, DJ = 3.6(6) kHz, and μ = 0.2676(3) D. For Ar 34SO3, B = 1439.090(5) MHz. The stretching frequency of the weak Ar-S bond is 61.(5) cm-1, and the force constant is thus 0.059(10) mdyn/Å. The Ar-S bond length in ArSO3 is 3.350(1) Å. The Ar-S-O angle is found to be 90.5°(5), thereby indicating no significant out-of-plane distortion of the SO3 moiety. Preliminary assignment of the N2SO3 spectrum yields a dipole moment of 0.46(1) D. Electric deflection studies show that (SO3)2 and (SO3)3 are polar species, while Xe2SO 3 is not.
AB - Microwave and radio frequency spectra of ArSO3 and radio frequency spectra of N2SO3 are measured by molecular beam electric resonance spectroscopy. Both complexes are symmetric rotors. The spectroscopic constants determined for Ar32SO3 are B = 1449.089(5) MHz, DJ = 3.6(6) kHz, and μ = 0.2676(3) D. For Ar 34SO3, B = 1439.090(5) MHz. The stretching frequency of the weak Ar-S bond is 61.(5) cm-1, and the force constant is thus 0.059(10) mdyn/Å. The Ar-S bond length in ArSO3 is 3.350(1) Å. The Ar-S-O angle is found to be 90.5°(5), thereby indicating no significant out-of-plane distortion of the SO3 moiety. Preliminary assignment of the N2SO3 spectrum yields a dipole moment of 0.46(1) D. Electric deflection studies show that (SO3)2 and (SO3)3 are polar species, while Xe2SO 3 is not.
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U2 - 10.1063/1.439908
DO - 10.1063/1.439908
M3 - Article
AN - SCOPUS:0010927601
VL - 73
SP - 137
EP - 141
JO - Journal of Chemical Physics
JF - Journal of Chemical Physics
SN - 0021-9606
IS - 1
ER -