Thermal, Solid Conductivity and Antioxidant Study of New Organoselenium Compounds Based on 1,4-Bis(chloromethyl)-2,5 Dimethylbenzene

Abstract

Of new selenium organ derivatives, two types of derivatives were prepared in two or three steps. In the first one, P-xylene reacted with p-formaldehyde and hydrochloric acid gave1,4-bis(chloromethyl) -2,5-dimethylbenzene which is transformed to a selencyanide compound by reacting with KSeCN under N2 atmosphere to give the corresponding new compounds. In the second type 1,4- bis(chloromethyl) -2,5-dimethylbenzene reacted with hydroxybenzaldehyde to give (Z)-3-(4-chloro-2,5-dimethylstyryl) phenol which reacted with KSeCN under N2 atmosphere to give the corresponding new compounds. All compounds were characterized by melting point, FTIR, elemental analysis, UV- Visible, 1H-NMR and13C-NMR and Mass spctra. Meanwhile, TG/DTA analysis of some of these ligands was conducted to evaluate the thermal stability, kinetic, and characteristic thermodynamic parameters. Antioxidant study showed that the prepared compounds under study have good efficacy for capturing the free radical DPPH, close to the activity of the standard antioxidant VitC, which was used in different concentrations.