%0 Conference Proceedings %T Application of Hammett equation to intramolecular hydrogen bond strength in para-substituted phenyl ring in some β-diketones and schiff bases %A Darugar, Vahidreza %A Vakili, Mohamad %A AFKANPOOR DEHBARZOUEI, MONIR %A Tayyari, Sayyed Faramarz %J بیستمین کنگره شیمی ایران %D 2018