dc.creator Pearson, J. C. en_US dc.date.accessioned 2006-06-15T15:29:36Z dc.date.available 2006-06-15T15:29:36Z dc.date.issued 1996 en_US dc.identifier 1996-MF-09 en_US dc.identifier.uri http://hdl.handle.net/1811/13447 dc.description $^{a}$Eizi Hirota, J. Mol. Spectrasc. 26, 335 (1968). en_US dc.description Author Institution: Jet Propulsion Laboratory, California Institute of Technology en_US dc.description.abstract The ground state torsion-rotation spectrum of the asymmetric internal hydroxyl rotation in propargyl alcohol ($HCCCH_{2}OH$) has been investigated in the 84 to 640 GHz range. The ground state has been confirmed to consists of two torsional sub-states of the gauche $conformer^{a}$, a symmetric gauche state ($gauche^{+}$) and an antisymmetric gauche state ($gauche^{-}$). No evidence of a low lying third state or trans conformer has been observed. The more stable gauche + state is 652389.5 MHz below the gauche- state. Due to their close proximity, the two gauche states interact strongly through a series of $a$- and $b$-type corilolis interactions. Strong $a$- and weak $b$-dipole rotational transitions are observed within each sub-state while strong $c$-dipole rotational transitions are observed between the two sub-states. Over 2300 transitions covering a range of J and $K_{a}$ values to 80 and 34, respectively, have been fit to experimental accuracy using a fixed-frame-axis method (FFAM) Hamiltonian. The rotation, distortion and interaction constants have been determined. The 652 GHz gauche + gauche- energy difference, strong $gauche^{+}$ to gauche- transitions and the constants derived from the analysis should enable rapid astronomical detection. en_US dc.format.extent 106250 bytes dc.format.mimetype image/jpeg dc.language.iso English en_US dc.publisher Ohio State University en_US dc.title THE GROUND STATE TORSION-ROTATION SPECTRUM OF PROPARGYL ALCOHOL ($HCCCH_{2}OH$) en_US dc.type article en_US
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