Abstract
Four of the most important tautomers of uracil were studied by the ab initio LCAO-MO method at the MP2/6-31G ** /HF/6-31G ** approximation. All calculated structures are minima at the HF/3-21G and HF/6-31G ** potential energy surfaces with the dioxo tautomer 1 being the global minimum. Also in a polar environment 1 is predicted to be a predominant form
Published Version
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