Metal supported macrocycles: Synthesis and characterization of some new 1,3-bis(benzimidazol-1-yl-methylene)benzene and 1,4-bis(benzimidazol-1-yl-methylene)benzene-bridged metal(II) cation complexes

Add time:09/04/2019    Source:sciencedirect.com

Two new non-chelating bidentate ligands 1,3-bis(benzimidazol-1-yl-methylene)benzene, hereafter 1,3-BIX, and 1,4-bis[benzimidazol-1-yl-methylene]benzene, hereafter 1,4-BIX, have been synthesized and their complexes with MII salts (M = Co, Ni, Cu, Zn, Pd and Pt) have been prepared and characterized using elemental analysis, magnetic moment measurement, IR, UV-vis and 13C NMR and FAB-MS (in some cases) studies. CuII, PdII and PtII metal ions yield dinuclear square-planar complexes viz. [enM(BIX)2X4 (en = 1,2]) diaminoethane; M = Pd or Pt, X = NO3; M = Cu, X = ClO4, BIX = 1,3- or 1,4-BIX). CoII chloride forms dimeric tetrahedral [Co(BIX)Cl2l2, whereas NiII and ZnII chlorides yield polymeric [M(BIX)Cl2]n complexes.

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