10min:
INFRARED SPECTRA OF ACETYLENE-NITROUS OXIDE TRIMERS: THE (N2O)2-C2H2 AND (N2O)2-C2D2.

M. DEHGHANY, MAHIN AFSHARI, J. N. OLIAEE, N. MOAZZEN-AHMADI, Department of Physics and Astronomy, University of Calgary, Calgary, AB T2N 1N4, CANADA; A. R. W. MCKELLAR, Steacie Institute for Molecular Sciences, National Research Council of Canada, Ottawa, ON K1A 0R6, CANADA.

The spectra of the (N2O)2-C2H2 and ((N2O)2-C2D2 trimers in the region of the N2O nu1 fundamental (~2224 cm-1) are observed using a tuneable diode laser to probe a pulsed supersonic slit jet expansion. The observed bands have c- and b-type rotational structure and the trimer has C2 symmetry. The structure of the trimer can be thought of as a nonpolar N2O dimer with a C2H2 monomer lying above the dimer plane. Search for the other possible isomers of the trimer is currently underway.