The molecular geometries of asparaginic acid, intermediates and the en
d products were optimized by MNDO method. It has been found that the b
reaking bond [GRAPHICS] in asparaginic acid was primary at the first,
Then C-N bond was breaked. The end product of the decomposition is acr
ylonitrile. The results are agreement with the experiment well, There
is a probability of breaking C-N bond when asparaginic acid is heated
to the dissociated temperature and the intermediate product of the dec
omposition is [GRAPHICS] At next step, this intermediate product will
lose CO2.