ISSN:
0377-0486
Schlagwort(e):
Chemistry
;
Analytical Chemistry and Spectroscopy
Quelle:
Wiley InterScience Backfile Collection 1832-2000
Thema:
Chemie und Pharmazie
,
Physik
Notizen:
A comparative Raman band shape study of the reorientation of monosubstituted benzene molecules (C6H5X, X = CH3, CH2Cl, CHCl2, CCl3 and C≡CCH3) in the liquid phase has been performed. Reorientational correlation functions appear to be less sensitive to molecular reorientation about the major axis (Z axis) than to rotation of the axis itself, approaching a symmetric top case. Molecular motion anisotropy is found to increase in the order C6H5CH3 〈 C6H5CH2Cl 〈 C6H5CHCl2 〈 C6H5CCl3 〈 C6H5CCCH3 as the rotation about the Z axis becomes increasingly preferred. These results are in agreement with NMR spin-lattice relaxation data.As expected for liquids with imporatant intermolecular interactions, both the free rotor and Kubo's model fail to fit the experimental correlation functions.
Zusätzliches Material:
2 Ill.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1002/jrs.1250180709
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