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Indexed by:期刊论文

Date of Publication:2018-10-18

Journal:JOURNAL OF COORDINATION CHEMISTRY

Included Journals:SCIE

Volume:71

Issue:20

Page Number:3266-3276

ISSN No.:0095-8972

Key Words:Silver supramolecular network; crystal structure; antimicrobial activity; thiophene-2,5-dicarboxylate; benzimidazole

Abstract:A silver(I) supramolecular network Ag(BIm)(2)(HTDC) (1) was assembled from thiophene-2,5-dicarboxylic acid (H2TDC) and benzimidazole (BIm) ligands and characterized by single-crystal X-ray diffraction, elemental analysis, FT-IR, and thermal gravimetric analysis. Complex 1 possesses a two-dimensional structure with a hydrogen-bonded grid network, in which the adjacent [Ag(BIm)(2)](+) cations and (HTDC)(-) are bridged via N-H center dot center dot center dot O hydrogen bonds forming undulating ribbons. The antibacterial properties of 1 were investigated by determining the minimal inhibitory concentration (MIC), the growth curve of bacteria and zone inhibition value assays against Gram-negative bacterium, Escherichia coli, and Gram-positive bacterium, Staphylococcus aureus. The MIC of 1 against E. coli and S. aureus are 15-20 ppm and 20-30 ppm which showed that 1 has higher antibacterial activity than commercial silver nanoparticles. The mechanism of antibacterial activity of 1 was also discussed.