Abstract
Two polynuclear zinc(II) complexes, [Zn2(L1)2(OH2)2] (1) and [ZnL2(μ1,1-N3)]n (2), where L1 is the dianionic form of N,N'-bis(3,5-difluoro-2-hydroxybenzylidene)-1,3-diaminopropane, and L2 is the monoanionic form of 2-[(2-dimethylaminoethylimino)methyl]-4,6-difluorophenol, have been prepared and structurally characterized by elemental analyses, IR and UV-Vis spectroscopy, as well as single-crystal X-ray diffraction. In complex 1, the Zn atom is in octahedral coordination, with the donor atoms of the Schiff base ligands L1 and one water O atom. In complex 2, the Zn atom is in trigonal-bipyramidal coordination, with the three donor atoms of the Schiff base ligand L2 and two azido N atoms. The complexes have strong antibacterial activity against B. subtilis and S. aureus.
Highlights
The rational design and preparation of new coordination compounds have attracted remarkable attention in coordination chemistry.[1]
As a continuation of the work on Schiff base complexes, and to explore new and effective antibacterial materials, we report here the synthesis, characterization, and self-assembly of two new zinc(II)
The complexes were prepared by reaction of equimolar quantities of the Schiff base ligands with zinc bromide and sodium azide in methanol
Summary
The rational design and preparation of new coordination compounds have attracted remarkable attention in coordination chemistry.[1] Azide anion is an interesting ligand in the self-assembly of new structures of complexes. A variety of azido complexes with discrete or one-, two-, and three-dimensional polymeric structures have been reported.[2] Schiff bases derived from salicylaldehyde and its derivatives usually possess two or more donor atoms, which can chelate to transition metal atoms, to form a variety of complexes.[3] Metal complexes with Schiff base ligands have attracted much attention in the fields of magnetic, catalytic, as well as biological materials.[4] Zinc complexes with Schiff base ligands are reported to have interesting antibacterial activities.[5] As a continuation of the work on Schiff base complexes, and to explore new and effective antibacterial materials, we report here the synthesis, characterization, and self-assembly of two new zinc(II). Complexes, [Zn2(L1)2(OH2)2] (1) and [ZnL2(μ1,1-N3)]n (2), where L1 is the dianionic form of N,N’-bis(3,5-difluoro-2-hydroxybenzylidene)-1,3-diaminopropane, and L2 is the monoanionic form of 2-[(2-dimethylaminoethylimino)methyl]-4,6-difluorophenol. The antibacterial activities of the complexes were investigated
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
