dc.creator Han, Jia-Xiang en_US dc.creator Hung, P. Y. en_US dc.creator Desain, J. D. en_US dc.creator Jones, W. E. en_US dc.creator Curl, R. F., Jr. en_US dc.date.accessioned 2006-06-15T19:25:13Z dc.date.available 2006-06-15T19:25:13Z dc.date.issued 1999 en_US dc.identifier 1999-WI-10 en_US dc.identifier.uri http://hdl.handle.net/1811/19589 dc.description Author Institution: Chemistry Department and Rice Quantum Institute, Rice University en_US dc.description.abstract The high resolution infrared spectrum of HCCN in the region $3338-3382cm^{-1}$ has been observed by infrared kinetic spectroscopy. The spectrum is assigned as the combination band $\nu_{1}+\nu_{5}$ of the quasilinear molecule HCCN with the origin at $3355.510(9)cm^{-1}$. Based on information from the $\nu_{1}+\nu_{5}-\nu_{5}$ $spectrum^{[1]}$, the energy of the lowest excited state with angular momentum about the a-axis, $\nu_{5}$, is determined to be $128.913(9)cm^{-1}$. This value is lower than the results obtained by means of relative intensity measurements on the millimeter-wave $spectra^{[2]}$ $[145(15)cm^{-1}]$ or from similar relative intensity measurements on the IR $spectra^{[1]}$ $[187(20)cm^{-1}]$. The present values of the energy for $\nu_{5}$ predicts a barrier to linearity similar to that obtained from the corresponding band of $DCCN^{[3]}$ and is higher than that found by McCarthy $et al.^{[2]}$. $^{[1]}$ C.L. Morter, S.K. Farhat and R.F. Cul, Chem. Phys. Lett. 207, 153(1993);$^{[2]}$ M.C. McCarthy, C.A.Gottlieb, A.L. Cooksy and P. Thadius, J. Chem. Phys. 103(18), 7779(1995);$^{[3]}$ Fuge Sun, A. Kosterev, G. Scott, V. Litosh, and R. F. Curl, J. Chem. Phys. 109(20), 8851(1998). en_US dc.format.extent 108637 bytes dc.format.mimetype image/jpeg dc.language.iso English en_US dc.publisher Ohio State University en_US dc.title $\nu_{1}+\nu_{5}$ OF HCCN: DETERMINATION OF THE $\nu_{5}$ VIBRATIONAL ENERGY en_US dc.type article en_US
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