Physics
Scientific paper
Jun 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009mss..confera02a&link_type=abstract
"International Symposium On Molecular Spectroscopy, 64th Meeting, Held 22-26 June, 2009 at Ohio State University. http://molspec
Physics
Infrared/Raman
Scientific paper
Spectra of acetylene-carbonyl sulphide trimers in the region of the OCS νb{1} fundamental (˜2062 wn) are observed using a tunable diode laser to probe a pulsed supersonic slit jet expansion. A previous microwave study of (OCS)_2- C_2H_2 by Peebles and Kuczkowski. gave a nonplanar triangular twisted structure, which could be thought of as a polar OCS dimer plus a C_2H_2 monomer lying above the dimer plane. In the present work, three infrared bands are analyzed. The first band clearly belongs to this previously known (OCS)_2-C_2H_2 complex. The second band can be assigned as an isomer of (OCS)_2-C_2H_2 having a similar structure, but with a nonpolar OCS dimer plus a C_2H_2 monomer above the dimer plane. The third band is assigned to OCS-(C_2H_2)_2. The rotational constants and dipole moment components of all three bands are consistent with barrel shape structures having C_1, C_2 and C_s symmetries, respectively.
[1] S.A. Peebles and R.L. Kuczkowski, J. Chem. Phys. 111, 10511 (1999).
Afshari Mahin
Dehghany M.
McKellar A. R. W.
Moazzen-Ahmadi Nasser
Norooz Oliaee J.
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