Synthesis and structure of Mn(II), Cu(II) and Zn(II) complexes containing bis-imidazole ligands
摘要:
A family of bis-imidazole ligands based on the parent bis(imidazol-2-yl)methane structure, and which can mimic multi-histidine coordination in biological systems, have been complexed to Mn(II), Cu(II) and Zn(11) centres. Five complexes were characterised by X-ray crystallography. A common structural feature of the ligands is that the two imidazole rings, which have a single spacer tetrahedral carbon atom between them, form stable, six-membered N,N' chelate rings with the metals. (C) 2004 Elsevier Ltd. All rights reserved.
;ive Ag(I) complexes containing the ligands bis(imidazol-2-yl)methane (2-BIM) and its derivatives were prepared and [Ag-2(2-BIM)(2)](ClO4)(2) and [Ag-2(2-BIM(Bz)OH)(2)](ClO4)(2) . EtOH were characterised using X-ray crystallography. In each dimer the two Ag(I) ions are two-coordinate and there are small but definite argentophilic Ag-Ag (d(10)-d(10)) interactions. All of the complexes display anti-fungal activity when tested in vitro against the fungal pathogen Candida albicans. (C) 2004 Elsevier Ltd. All rights reserved.