The title naphthylamine (II) is subjected to aromatic nucleophilic substitution with various amines thiols and alcohols. -(OKADA*, E.; OTSUKI, Y.; SHINOHARA, M.; MEDEBIELLE, M.; SHIMIZU, Y.; TAKEUCHI, H.; Tetrahedron Lett. 44 (2003) 4, 741-743; Dep. Chem. Sci. Eng., Fac. Eng., Kobe Univ., Nada, Kobe 657, Japan; Eng.) -Roy 18-085
The results of Br K-edge X-ray absorption measurements of 1-bromonaphthalene dissolved in supercritical¯uid Xe are reported. As the pressure of Xe con®ned in a high-pressure cell is increased, the absorption spectrum of bromonaphthalene gradually appears, showing that Xe in the supercritical¯uid state solvates the bromonaphthalene molecule. The spectrum of the dissolved sample shows a remarkable difference from that of the pure liquid sample in the near-edge region of the X-ray absorption spectrum, re¯ecting the interaction of the solute material with solvent Xe. Ab initio full multiple-scattering calculations can reproduce the spectral features qualitatively. A large value of the Debye±Waller factor must be introduced to give the best ®t, corresponding to a large degree of spatial disorder and violent thermal vibration of the Xe atoms around the Br atom.
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