Carbazole functionalized luminescent silver(I), gold(I) and gold(III)-N-heterocyclic carbene complexes: a new synthetic disproportionation approach towards Au(I)-NHC to provide Au(III)-NHC †

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The binding interaction of a well known alkaloid strychnine (STN) with the mammalian milk protein β-lactoglobulin and human lysozyme has been explored by using several spectroscopic techniques along with computational studies.

A series of complexes of the type [ML2Cl2], where L=2-(o-anisylidene-2'-imino) amino benzimidazole (AIAB) and 2-(furfurylidene imino) amino benzimidazole (FIAB), M=Cu(II), Co(II), Ni(II) and Zn(II), have been synthesized and characterized on the basis of elemental analysis, thermal analysis, molar conductivity, magnetic moment, electronic, infrared, 1 H-NMR spectral studies. The results are in consistent with bidentate chelation of ligand with azomethine nitrogen and ring nitrogen donors. All these Schiff bases and their complexes have also been screened for their antibacterial (Bacillus subtilis, Bacillus stearothermophilus, Escherichia coli and Salmonella typhi) and antifungal activities (Aspergillus niger and Aspergillus flavus).