# ANALYSIS OF THE PERPENDICULAR BANDS OF CYCLOPROPANE IN THE $3.3 \mu$m REGION

Please use this identifier to cite or link to this item: http://hdl.handle.net/1811/16774

Files Size Format View
1984-TB-03.jpg 692.3Kb JPEG image

 Title: ANALYSIS OF THE PERPENDICULAR BANDS OF CYCLOPROPANE IN THE $3.3 \mu$m REGION Creators: Merdes, D. W.; Pliva, J.; Pine, A. S. Issue Date: 1984 Publisher: Ohio State University Abstract: The C-H stretching region of the spectrum of the cyclopropane molecule between 2898 and $3157 cm^{-}$ was recorded using the difference-frequency laser spectrometer system. Parts of the spectrum were deconvolved to $\sim 1/2$ of the Doppler width ($\sim 0.002 cm^{-1}$). The main bands in this region are the fundamentals $\nu_{6}(A^{\prime \prime})$ and $\nu_{8}(E^{\prime})$ accompanied by a number of combination bands enhanced by resonances with the fundamentals. The upper state of the perpendicular band $\nu_{8}$ occurring near $3022 cm^{-1}$ is in Fermi resonance with $\nu_{2} +\nu_{9}$, which appears fairly strongly near $2934 cm^{-1}$, and with $\nu_{7}+\nu_{9}+\nu_{14}$ located only $9 cm^{-1}$ above $\nu_{8}$. Additional weaker perturbations of the $\nu_{8}$ state have also been identified. The $\nu_{2}+\nu_{9}$ combination is in turn very severely perturbed by several other states. A Hamiltonian matrix including the $\nu_{8}, \nu_{2} + \nu_{9}, \nu_{7} + \nu_{9} + \nu_{14}$, and several other perturbing states has been used for the treatment of the observed energy levels with the aid of our program system SYMTOP. The resulting deperturbed'' spectroscopic constants and the interaction constants will be reported. Highly accurate values of the ground state constants $B_{o}, D^{o}_{J}$, and $D^{o}_{JK}$ have also been obtained in the analysis. Description: Author Institution: Department of Physics, The Pennsylvania State University; Molecular Spectroscopy Division, U.S. National Bureau of Standards URI: http://hdl.handle.net/1811/16774 Other Identifiers: 1984-TB-3