Preparation and theoretical study of chromium complexes with Cefaxime derivative and corrosion inhibition study

The theoretical and experimental methods were studied for prevention of corrosion Mild Steel in Hydrochloric Acid (HCl) by using a novel Cefaxime derivations drugs. The results showed that metal complex was a strong corrosion resistance protect for Mild Steel in hydrochloric acid and the inhibition efficiency (%IE) increased with increasing concentration of drugs due to that the novel Cefixime derivative drugs metal complex was adsorpd from acid solution on surface of Mild Steel. The program of hyperchem-8.07 used for theoretical study of the drugs by molecular mechanics and semi-empirical calculations. Quantum chemistry was studied dealt with inhibitor absorption and electron transformation from the inhibitor to the metal, also inhibition potentials of drugs attachment with the (Lumo-Homo) energy gap, dipole moment (μ) of the molecules and electrostatic potentials.