Chemical reactivity of quinmerac herbicide through the fukui function.

In the present work we have calculated DFT reactivity descriptors for quinmerac (7-chloro-3-methylquinoline-8-carboxylicacid) at the MP2/6-311++G(d,p)//B3LYP/6-311++G(2d,2p) level of theory to analyze its reactivity. Reactivitydescriptors such as ionization energy, molecular hardness, electrophilicity, condensed Fukui function and total energieswere calculated to predict changes in its reactivity. The Fukui function values predict that electrophilic and free radicalattacks on quinmerac might cause aromatic substitutions, while nucleophilic attacks would cause cleavage of the C=Nbond