Add time:09/06/2019         Source:sciencedirect.com

The preparation and characterisation of complexes of 2-amino-5-nitrothiazole (ANT) with Co(II), Ni(II), Cu(II), Cd(II), Cu(I) and Ag(I) are described. From spectral data it is inferred that the complexes fall into two groups: those in which ANT is bound through the ring nitrogen, and those in which the exocyclic amine group is bound to the metal ion. In the former group are complexes of the type MCl2(ANT)2 (M  Co, NJ, Cu, Cd); compounds containing methanol, NiBr2(ANT)3(MeOH), Ni- (NCS)2(ANT)2(MeOH)2, Ni(NCS)2(ANT)2(MeOH); and AgNO3(ANT)2, Cu(AcO)2(ANT) and CuCl- (ANT)2 In the latter group are complexes prepared from and containing N,N′-dimethylformamide: CoSO4(ANT)2(DMF)2, NiSO4(ANT)2(DMF)2, NiCl2- (ANT)2(DMF)2, CuSO4(ANT)(DMF) and CuCl2- (ANT)(DMF). The probable structures of the nickel and cobalt complexes are discussed. The coordination chemistry of the thiazole group and the effect of the electron withdrawing nitro-group are discussed.

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