The great need to the antioxidants in our life and the increased demand of thiourea derivatives which exhibit great biological activity as anti-inflammatory, antimicrobial, antitumor, and also act as antioxidants and anticorrosive agents leads us to synthesize: N-(2-chlorophenyl)-N’- benzoyl thiourea (CBT) and N-(4-chloro phenyl)-N’- benzoyl thiourea (PCBT) by reflux method and then their metal complexes of CoII, NiII, CuII and ZnII were synthesized by microwave (green chemistry) in hope to get better activities. The structure of ligands and their complexes have been characterized by using elemental analysis, mass Spectroscopy, FT-IR, UV-Vis., 1HNMR and 13CNMR. In this study the synthesized compounds were evaluated for their in vitro DPPH radical scavenging activity. They exerted varying degree of scavenging activity toward DPPH radical with IC50 values between 84 and 250 µg/mL which is considered good and acceptable activity when compared with the activity of standard Ascorbic acid which give IC50 = 14.4 µg/mL. Also the anticorrosion activity of the two synthesized ligands (CBT) and (PCBT) was evaluated on carbon steel coupons by using weight loss method.