Infrared vibration-rotation spectrum and structure of OCS dimer
作者:
R.W. Randall,
J.M. Wilkie,
B.J. Howard,
J.S. Muenter,
期刊:
Molecular Physics
(Taylor Available online 1990)
卷期:
Volume 69,
issue 5
页码: 839-852
ISSN:0026-8976
年代: 1990
DOI:10.1080/00268979000100641
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Direct observations of infrared absorption in the weakly bound dimer of carbonyl sulphide, produced in pulsed molecular beams, have been made. Diode laser spectra in the 5 micron, carbonyl stretching, wavelength region were recorded with FWHM linewidths of approximately 100 MHz. All of the observations are consistent with OCS dimer having aC2h, centrosymmetric geometry, with the centres of mass of the monomers nearly opposite one another. This essentially perpendicular structure places the S atoms close to the centre of the complex. The perpendicular distance between the monomer axes is 3·64 Å. Intermolecular potential functions containing dispersion and electrostatic contributions are discussed.
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