13C and 2H spin–lattice relaxation in neopentane-d12
Keyword(s):
The results of a variable temperature study of the 2H and 13C spin–lattice relaxation times in neopentane-d12 are reported. along with those for the 13C's in neopentane at a single temperature. Orientational and angular momentum correlation times derived from these T1's exhibit the following: (i) τ2 is continuous through the melting point with an activation energy of 0.98 kcal/mol, (ii) τJ is more or less constant at 0.33 ± 0.03 ps within 40 K of either side of the melting point, and (iii) they do not conform to the theoretical relationships of extended diffusion, Fokker–Planck, or Langevin theories. The spin–rotation coupling constants are calculated to be −0.69 kHz for neopentane and −0.52 kHz for neopentane-d12
1993 ◽
Vol 49
(3)
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pp. 329-338
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1980 ◽
Vol 58
(23)
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pp. 2709-2713
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1995 ◽
Vol 50
(1)
◽
pp. 81-89
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