Using ab initio HF/6-31G* and MP2/6-31G** calculations alternative re
actions HC(OH)(3) --> HCO2H + H2O and HC(OH)(3) + H2O --> HCO2H + 2H(2
)O are investigated and the results are compared with relevant PM3, HF
/3-21G, and HF/6-31G data. Reactant and product complexes as well as t
ransition states are located on corresponding potential energy surface
s. (C) 1996 John Wiley & Sons, Inc.