Effect of Coupling between Rotational and Translational Brownian Motions on NMR Spin Relaxation: Consideration Using Green Function of Rigid Body Diffusion
✍ Scribed by Igor S. Beloborodov; Vladislav Yu. Orekhov; Alexander S. Arseniev
- Publisher
- Elsevier Science
- Year
- 1998
- Tongue
- English
- Weight
- 98 KB
- Volume
- 132
- Category
- Article
- ISSN
- 1090-7807
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✦ Synopsis
Using the Green function of arbitrary rigid Brownian diffusion
Equations describing homo-and heteronuclear relaxation (Goldstein, Biopolymers 33, 409-436, 1993), it was analytically rates in terms of values of spectral density function J qq = (v) shown that coupling between translation and rotation diffusion can be found elsewhere (1). Here, J qq = (v) is a Fourier transdegrees of freedom does not affect the correlation functions releform of the relevant correlation function F qq = (t) Å vant to the NMR intramolecular relaxation. It follows that spectral »F* q (t)F q = (t / t)…. As usual, F(t) is the time-dependent densities usually used for the anisotropic rotation diffusion part of the interaction causing the relaxation. For the intra-(Woessner, J. Chem. Phys. 37, 647-654, 1962) can be regarded molecular relaxation mechanisms F(t) is not depend explicas exact in respect to the rotation-translation coupling for the itly on the coordinates and can be expressed by Wigner spin system connected with a rigid body. ᭧ 1998 Academic Press matrix components D (2) q0 [V L ] (4):