The title complex [Co( NTB) Cl] 2 [CoCl 4 ]·4CH 3 OH( NTB = tris( 2- benzimidazylmethyl) amine) has been synthesized and structurally characterized,and its SOD activity was detected by NBT photoreduction method. The results showed that Co2 +coordination configuration of the complex had two types: one was [CoCl 4 ]2-,forming a distorted tetrahedral configuration with four chloride ions; another was[Co( NTB) Cl]-,forming a distorted triangular bipyramid structure. The title complex had a certain superoxide di...