Acta Chimica Sinica ›› 1983, Vol. 41 ›› Issue (1): 87-89. Previous Articles     Next Articles

Original Articles

N-(间-取代苯基)氨基乙酸的离解常数

陈荣悌;林华宽   

  1. 南开大学化学系
  • 出版日期:1983-01-15 发布日期:1983-01-15

The dissociation constants of N-(meta-substituted-phenyl) glycines

CHEN RONGTI;LIN HUAKUAN   

  • Online:1983-01-15 Published:1983-01-15

The apparent dissociation constants of N-(meta-substituted- phenyl) glycines have been determined by pH method at 15, 25, 35C in the pesence of 0.1M, NaClO4 and in 30% (vol.) ethanol solution. It was found that in the N-substituted phenyl glycine molecule, when the substituent has been changed from para position to meta position, the dissociation constants of these amino acids change appreciably. In addition, the thermodynamic parameters of protonation of N-(meta-substituted-phenyl) glycines were also calculated.

Key words: AMINO ACID, BENZAMINE P, ACETIC ACID P, DISSOCIATION EQUILIBRIUM

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