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Temperature-dependent spectral spin diffusion in solid state deuteron magnetic resonance

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Müller,  Andreas
Research Group Prof. Dr. Haeberlen, Max Planck Institute for Medical Research, Max Planck Society;

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Haeberlen,  Ulrich
Research Group Prof. Dr. Haeberlen, Max Planck Institute for Medical Research, Max Planck Society;

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Müller, A., & Haeberlen, U. (1996). Temperature-dependent spectral spin diffusion in solid state deuteron magnetic resonance. Chemical Physics Letters, 248: 3-4, pp. 249-254. doi:10.1016/0009-2614(95)01309-1.


Cite as: https://hdl.handle.net/11858/00-001M-0000-0024-34A7-E
Abstract
The polarization transfer from the para to the ortho/meta deuterons was investigated in a single crystal of perdeuterated biphenyl, C12D10. It is demonstrated that this process is due to spin diffusion via dipolar coupling. We found that in the range from 290 to 315 K it is strongly dependent on the temperature. The apparent activation energy of about 75 kJ/mol is the same as that of the known 180° flips of phenyl rings about the long molecular axis. As an explanation of the observed temperature dependence of the spin diffusion we discuss an exchange broadening of the relevant zero−quantum line caused by the 180° flips