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Short Report


ScienceAsia 17 (1991): 151-155 |doi: 10.2306/scienceasia1513-1874.1991.17.151

 

INVESTIGATION ON PROTONATION OF N-ACETYL-L-ALANINE BY QUANTUM CHEMICAL CALCULATIONS

 

VITHAYA RUANGPORNVISUTI

ABSTRACT: Protonation potentials of N-acetyl-l-alanine molecule were evaluated by means of ab-initio LCAO-MO-SCF calculations. First and second protonation potentials (in gas phase) are -179.4 and -90.7 kcal/mol, respectively. In aqueous solution, only one protonation can take place.

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Department of Chemistry, Faculty of Science, ChulaIongkom University, Bangkok, Thailand 10330

Received 1 October 1991