FORMATION OF BENZIMIDAZOLIUM SALT IN THE COMPLEXATION OF 2-SUBSTITUTED BENZIMIDAZOLE DERIVATIVE

In an attempted synthesis of Zn(II) complex of a tridentate ligand[2-((1H-benzimidazol- 2-yl) methylamino) acetic acid] (BIG), benzimidazolium salt was formed instead of Zn(II) complex. Benzimidazolium salt was structurally characterized by single crystal Xray diffraction. The compound is crystallized in the monoclinic system and crystallographic details of X-Ray structure of benzimidazolium salt are : Space group: P2(1)/c, a (angstrom) = 7.021(6), b (angstrom) = 19.934(18), c (angstrom) = 9.869(9), V (angstrom(3)) = 1371(2), a ((degrees)) = 90, beta (degrees)= 96.858(14), gamma ((degrees))= 90, Z= 4, R factor was 0.1080 for 7381 observed reflections.