CJCU

Chem. J. Chinese Universities ›› 1985, Vol. 6 ›› Issue (5): 447.

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Studies on Internal Rotation of Methyl in Substituted Benzene by Using 13C NMR Spin-lattice Relaxation Time

Xie Dilin1, Wang Jinslian1, Chen Liang2, Hu Yu xian2   

  1. 1. Department of Eadio Electronice, Beijing Normal University, Beijing;
    2. Department of Chemisty, Shanxi University, Taiyuan
  • Received:1983-12-21 Online:1985-05-24 Published:1985-05-24

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Abstract: Amethod for determinating the spin-internal rotation relaxation rate of methyl by ortho-subslituting and meta-substituting the sample ( toluene ) is suggested. Spin-lattice relaxation times ( T1 ) and nuclear Overhauser effect ( NOE ) of 13Cin the methyl of ο-xylene and m-xylene between 28℃ and 90℃ are measured. The spin-whole rotation relaxation rate and spin-internal rotation relaxation rate of 15Cin the methyl of m-xylene are separated, with the internal rotation rate of the methyl calculated.

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