Abstract

Abstract Deltic and square acids, C n O n H 2 ( n = 3 and 4) have been studied by ab initio SCF calculations employing a split-valence 4-31G basis set. The geometries of the three different rotamers have been optimized by the force method. IR frequencies were determined from the ab initio harmonic force field. The dipole moment, quadrupole moment and electric field gradient for oxygen have been calculated. A new molecular arrangement in the crystal of deltic acid is proposed.

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