Abstract
The structural parameters of chlorocyclobutane,c-C4H7Cl, have been obtained fromab initio Hartree-Fock calculations employing the 6–31G* basis set for both the more stable equatorial and the high energy axial conformers. The determined carbonhydrogen distances were adjusted by 0.010 Å and held fixed while a weighted least-squares adjust was used to obtain all of the heavy atom parameters for the equatorial conformer by fitting the rotational constants of nine isotopic species. The determinedr 0 parameters are:r(Cα - Cβ) = 1.535(8) År(Cβ - Cγ) = 1.548(3) År(Cα - Cl) = 1.788(9) Å\(< )\)CβCαCβ, - CL = 132.0(2)°;\(< )\)CβCγCβ, = 89.7(6)°;\(< )\)CαCβCγ, = 87.1(2)°, and\(< )\)CβCγCβ, = 88.7(2)°. These results are compared to the calculated values as well as those obtained earlier from electron diffraction and microwave studies.
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For Part LVII, seeJ. Raman Spectrosc.,1990,21, 591.
Taken in part from the thesis of M. J. Lee which will be submitted to the Department of Chemistry in partial fulfillment of the Ph.D. degree.
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Durig, J.R., Lee, M.J. & Little, T.S. Spectra and structure of small ring compounds. Part L VIII: Structural parameters for chlorocyclobutane from combined microwave data and ab initio calculations. Struct Chem 2, 195–200 (1991). https://doi.org/10.1007/BF00676631
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DOI: https://doi.org/10.1007/BF00676631