Biological Activity and Molecular Structures of Bis(benzimidazole) and Trithiocyanurate Complexes

H-Benzimidazol-2-yl)-N-(1H-benzimidazol-2-ylmethyl)methanamine (abb) and 2-(1H-benzimidazol-2-ylmethylsulfanylmethyl)-1H-benzimidazole (tbb) have been prepared and characterized by elemental analysis. These bis(benzimidazoles) have been further used in combination with trithiocyanuric acid for the preparation of complexes. The crystal and molecular structures of two of them have been solved. Each nickel atom in the structure of trinuclear complex (Ni3(abb)3(H2O)3(μ-ttc))(ClO4)3·3H2O·EtOH (1), where ttcH3 = trithiocyanuric acid, is coordinated with three N atoms of abb, the N,S donor set of ttc anion and an oxygen of a water molecule. The crystal of ((tbbH2)(ttcH2)2(ttcH3)(H2O)) (2) is composed of a protonated bis(benzimidazole), two ttcH2 anions, ttcH3 and water. The