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Syntheses and characterization of cobalt(II) and iron(III) complexes with the Schiff basesN-(o-hydroxybenzylidene)-2-aminobenzimidazole andN-(o-hydroxybenzylidene)-2(2′-aminophenyl)benzimidazole
Authors:Cristina Molleda  José A García-Vazquez  M Antonia Mendiola  José R Masaguer
Institution:(1) E.U.I.T. Forestal, Universidad Politécnica, 28040 Madrid, Spain;(2) Depto. Química, C-8, Facultad de Ciencias, Universidad Autónoma, 28049 Madrid, Spain
Abstract:Summary N-(o-hydroxybenzylidene)-2-aminobenzimidazole (HL) andN-(o-hydroxybenzylidene)-2(2prime-aminophenyl)benzimidazole (HLprime) react with CoX2 (X=Cl, Br, or NCS) and FeCl3 yielding complexes of general formulae Co(HL)2X2], Co(HLprime)2X2], FeCl2(HL)2] FeCl4], and FeCl2(HLprime)2]FeCl4]. Moreover, it was possible to isolate the complexes Co(HL)Br2] Co(L)Cl] and Co(Lprime)Cl]. The complexes were characterized by elemental analyses, i.r. and electronic spectroscopies and conductivity and magnetic measurements at different temperatures.
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