Synthesis and spectral properties of 1, 3-bis(2-benzirnidazyl)benzene and its N-methylated derivative-Reactions with some acids and cobalt(II) salts

Abstract

Syntheses of 1,3-bis(2-benzimidazyl)benzene (bBzlH₂Bz) and its N-methylated derivative (NMebBzlBz) as well as their acid adducts and a few complexes of cobalt(ll), CoX₂L (X = halogen; L= N-heterocycle) and [CoL₂](CIO₄)₂, have been described. The heterocycles have been characterised by IR, electronic and NMR spectral data The electronic and magnetic susceptibility data suggest tetrahedral geometry for CoX₂L and [COL₂] (ClO₄ (L= bBzIH₂Bz or N-MebBzlBz), trigonal-bipyramidal for CoX₂(N-MebBzlPy) [N-MebBzlPy = 2,6-bis(N-methylbenzimidazyl)pyridine and square-pyramidal geometry for [Co(N-MebBzlPy)₂]X₂ (X = l or CIO₄) complexes.