Copper(II) complexes of N-heteroaromatic hydrazones: Synthesis, X-ray structure, magnetic behavior, and antibacterial activity
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Three novel copper(II) complexes as condensation derivatives of 2-pyridinecarboxaldehyde, 2-acetylpyridine or 2-quinolinecarboxaldehyde with ethyl hydrazinoacetate hydrochloride were synthesized. X-ray crystal structures of all three complexes were determined. Crystallographic data indicate a common basis of the structures with some major differences. Both pyridine derivatives form complexes of the type [CuCl2L] with distorted square-planar geometry around copper(II), but show a decisive difference in the side chain orientation. The quinoline derivative forms a dimeric complex of type [Cu2Cl4L2] with distorted trigonal bipyramidal geometry around copper(II), but a rather short Cu···Cu contact, which is reflected in its magnetic properties. All three complexes showed antibacterial activity.
Keywords:Antibacterial activity / Copper(II) complexes / Heteroaromatic hydrazones / X-ray structure analysis
Source:Inorganica Chimica Acta, 2009, 362, 6, 1996-2000
- Elsevier Science Sa, Lausanne