High resolution infrared spectroscopy of cyclobutane: A study of vibrational mode coupling involving large amplitude, low frequency modes

Li, H.; Miller, C. Cameron; Philips, Laura A.
June 1994
Journal of Chemical Physics;6/15/1994, Vol. 100 Issue 12, p8590
Academic Journal
The high resolution IR spectrum of cyclobutane in a supersonic molecular beam was obtained for the region of 2981 to 2991 cm-1. The spectrum reveals four overlapping bands suggestive of vibrational mode coupling in the C–H stretching region. Ground state combination differences demonstrate that these bands originate from two different ground states, the symmetric and asymmetric ring puckering states. Evidence of vibrational mode coupling is present in all four bands. The coupling depends on both J and the symmetry of the puckering state. A model coupling scheme involving two qualitatively different types of couplings is developed to explain the observed spectrum. Symmetry restrictions and the interaction between molecular rotation and ring puckering qualitatively accounts for the dramatically different coupling behavior between the two ring puckering states.


Related Articles

  • Excitonic photoluminescence linewidths in AlGaAs grown by molecular beam epitaxy. Reynolds, D. C.; Bajaj, K. K.; Litton, C. W.; Yu, P. W.; Klem, J.; Peng, C. K.; Morkoç, H.; Singh, Jasprit // Applied Physics Letters;3/17/1986, Vol. 48 Issue 11, p727 

    The linewidths of excitonic transitions were measured in AlxGa1-xAs, grown by molecular beam epitaxy as a function of alloy composition x for values of x<=0.43 using high resolution photoluminescence spectroscopy at liquid helium temperature. The values of the linewidths thus measured are...

  • Facile alignment of molecular rotation in supersonic beams. Pullman, David P.; Friedrich, Brˇetislav; Herschbach, Dudley R. // Journal of Chemical Physics;9/1/1990, Vol. 93 Issue 5, p3224 

    We have obtained substantial alignment of I2(X 1Σ+g;v‘=0;J‘=13,15) seeded in supersonic beams of light carrier gases. Laser-induced fluorescence and a variant of the magnetic precession technique were used to measure the ratio n⊥/n|| of molecules with the rotational angular...

  • Measurements of electric dipole moments on NO2. Heitz, S.; Lampka, R.; Weidauer, D.; Hese, A. // Journal of Chemical Physics;2/15/1991, Vol. 94 Issue 4, p2532 

    Electric dipole moments of the A 2B2 and X 2A1 states of NO2 were measured by high resolution laser spectroscopy in a supersonic molecular beam under a static electric field ranging up to 300 kV/cm. The measurements were performed on the qR(0)00 transition of band 99 at 593 nm. The results for...

  • High resolution spectra and conformational analysis of 2-butoxy radical. Stakhursky, Vadim L.; Zu, Lily; Jinjun Liu; Miller, Terry A. // Journal of Chemical Physics;9/7/2006, Vol. 125 Issue 9, p094316 

    We have recorded five high resolution (200 MHz), rotationally resolved, vibrational bands of the ...-... electronic transition of 2-butoxy. Two bands of the 2-butoxy spectrum have been rotationally analyzed and assigned to two different geometrical conformers of the molecule. The analyses allow...

  • Morphological studies of oval defects in GaAs epitaxial layers grown by molecular beam epitaxy. Matteson, S.; Shih, H. D. // Applied Physics Letters;1/6/1986, Vol. 48 Issue 1, p47 

    The detailed morphology of defects occurring in GaAs layers grown by molecular beam epitaxy (MBE) was determined by high resolution scanning electron microscopy and scanning Auger spectroscopy under various substrate preparation and MBE growth conditions. It was observed that surface defects...

  • Decelerated molecular beams for high-resolution spectroscopy. Veldhoven, J.; Küpper, J.; Bethlem, H.; Sartakov, B.; van Roij, A. J. A.; Meijer, G. // European Physical Journal D -- Atoms, Molecules, Clusters & Opti;Nov2004, Vol. 31 Issue 2, p337 

    Ultimately, the resolution of any spectroscopic experiment is limited by the interaction time between the particles that are to be examined and the measuring device. The obtainable spectroscopic resolution in a molecular beam experiment can be considerably improved using samples of slow...

  • A double-stage pulsed discharge fluorine atom beam source. Zefeng Ren; Minghui Qiu; Li Che; Dongxu Dai; Xiuyan Wang; Xueming Yang // Review of Scientific Instruments;Jan2006, Vol. 77 Issue 1, p016102 

    Molecular-beam intensity and speed ratio are two major limiting factors in many molecular-beam experiments. This article reports a high-intensity, high-speed-ratio, pulsed supersonic fluorine atom beam source using a double-stage discharge beam source. Its performance is indicated by the...

  • A study on the anisole–water complex by molecular beam–electronic spectroscopy and molecular mechanics calculations. Becucci, M.; Pietraperzia, G.; Pasquini, M.; Piani, G.; Zoppi, A.; Chelli, R.; Castellucci, E. // Journal of Chemical Physics;3/22/2004, Vol. 120 Issue 12, p5601 

    An experimental and theoretical study is made on the anisole–water complex. It is the first van der Waals complex studied by high resolution electronic spectroscopy in which the water is seen acting as an acid. Vibronically and rotationally resolved electronic spectroscopy experiments and...

  • Photoelectron spectroscopy and electronic structure of clusters of the group V elements. I. Dimers. Wang, Lai-Sheng; Lee, Y. T.; Shirley, D. A.; Balasubramanian, K.; Feng, P. // Journal of Chemical Physics;11/1/1990, Vol. 93 Issue 9, p6310 

    The HeI (584 Ã…) high resolution photoelectron spectra of As+2, Sb+2, and Bi+2 have been obtained with a high temperature molecular beam source. A pure As2 beam was produced by evaporating Cu3As. Sb2 was generated as a mixture with the atoms and tetramers by evaporating the pure element,...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics