Molecular Structures and Vibrational Frequencies of 7H Furo 3 2 G 1 Benzopyran 7 One 2 M 1 Bezoyloxy 1 Methylethyl 2 3 Dihydro by Ab İnitio Hartree Fock and Density Functional Theory Calculations

8th Congress of Physical-Chemistry of the Portequese Chemical Society, Portekiz, 21 - 22 Haziran 2007