Reactions of hydrated halides/perchlorate of cobalt(II), nickel(II) and copper(II) with 1,2-bis(N-methylbenzimidazolyl)benzene (L) in stoichiometric amts. in ethanol-teof/acetone/thf produced complexes of the formulas MX2L·nH2O (n = 1, M = Co, X = Cl ; n = 0, M = Co, X = Br or I ; n = 0, M = Ni, X = I ; n = 0, M = Cu, X = Br), [MX2L (H2O)] ( M = Ni, X = Cl or Br ; M = Cu, X = Cl), [Co(OClO3)2(L)1.5]2·2H2O, [Ni(L)2](ClO4)2·H2O and [Cu(L)2(OClO3)]ClO4·2H2O. The complexes were characterised by elemental analyses, thermogravimetric anal., magnetic moment measurments, IR, electronic, NMR, ESR, mass spectral techniques. Probable structures have been proposed for the complexes
