• Title/Summary/Keyword: 1991

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On the Critical Scattering Phenomena of a Nonpolar Binary Liquid Mixture

  • Dong J. Lee;Shoon K. Kim
    • Bulletin of the Korean Chemical Society
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    • v.12 no.4
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    • pp.403-406
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    • 1991
  • Light scattering phenomena are discussed for a nonpolar binary liquid mixture composed of an optically active solute and an optically nonactive solvent in the critical region, using the Fisher theory. Comparing them with those in the case that the Ornstein-Zernike theory is satisfied, the appropriate analytic results are obtained and discussed.

Semiempirical MO Calculation of Hetero Atom Three-Membered Ring Compounds(II)${\cdot}$N-Nitroso-azirine and-diaziridine

  • Ki Woon Hwang
    • Bulletin of the Korean Chemical Society
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    • v.12 no.3
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    • pp.328-331
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    • 1991
  • Fully optimized MNDO molecular orbital calculations are performed for N-nitroso-azirine (Ⅰ) and-diaziridine (Ⅱ). The ground state geometries show the nonplanar configuration around the imino nitrogen. The nitroso group rotational energy barriers and the ring inversion energy barriers are also discussed.