Effect of Intermolecular Interactions on the Anisotropic Rotational Motions of Molecules
¹H, ²H and ¹⁴N nuclear magnetic resonance relaxation study of the acetonitrile-chloroform liquid system
2H and 14N spin-lattice relaxation times for the CD3CN and CDCl3 molecules in the CD3CN-CDCl3 liquid system have been determined at temperatures between 250 and 315 K. Analyses of these data led to the determination of rotational diffusion coefficients about the C3 symmetry axis (D∥) and around the axes perpendicular to the symmetry axis (D⊥). Anisotropy of the rotational motions (D∥/D⊥) of CD3CN increases upon addition of CDCl3 to CD3CN liquids and reaches maxima at the mole fraction of CDCl3[χ(CDCl3)] = 0.8. Slowing down of the rotational motions of CDCl3 is also observed, and reaches minima at χ(CDCl3) = 0.6-0.7.
T. Tokuhiro, "Effect of Intermolecular Interactions on the Anisotropic Rotational Motions of Molecules," Journal of the Chemical Society, Faraday Transactions 2: Molecular and Chemical Physics, Royal Society of Chemistry, Jan 1988.
The definitive version is available at http://dx.doi.org/10.1039/F29888401793
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© 1988 Royal Society of Chemistry, All rights reserved.