dc.creator Gillies, C. W. en_US dc.creator Amadon, S. en_US dc.creator Gillies, J. Z. en_US dc.date.accessioned 2006-06-15T19:06:03Z dc.date.available 2006-06-15T19:06:03Z dc.date.issued 1998 en_US dc.identifier 1998-RJ-12 en_US dc.identifier.uri http://hdl.handle.net/1811/18988 dc.description Author Institution: Department of Chemistry, Rensselaer Polytechnic Institute; Department of Chemistry, Siena College en_US dc.description.abstract A pulsed-beam Fourier-transform microwave spectrometer was used to investigate the rotational spectrum of the van der Waals dimer of ketene. Five states arising from internal motions of ketene were assigned for the normal isotopomer. Only one state could be fit satisfactorily to an asymmetric top Watson Hamiltonian. The least squares fit of the observed $\mu_{a}, \mu_{b}$ and $\mu_{c}$-type transitions gave rotational constants of $A = 5263.2758(21)MHz. B = 1826.4985(12)MHz$ and $C = 1642.7707(12)MHz$. Electric dipole moment components of $\mu_{a} = 1.527(4)D, \mu_{b} = 0.654(23)D$ and $\mu_{c} = 2.655(9)D$ were calculated from Stark shift measurements. The spectral data are consistent with a head to head crossed dimer structure and least squares fits of the moments of inertia give a ketene separation of 3.359(1){\AA}. The structure is in agreement with a $2 \pi_{***}+2\pi_{***}$ approach of two ketene monomers as predicted by orbital symmetry analysis for the observed dimerization reaction of ketene. en_US dc.format.extent 109776 bytes dc.format.mimetype image/jpeg dc.language.iso English en_US dc.publisher Ohio State University en_US dc.title THE ROTATIONAL SPECTRUM OF KETENE DIMER en_US dc.type article en_US
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