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Synthesis, X-ray analysis and antibacterial study of silver complex with ethyl-5-hydroxy- 2-oxo-2H-chromene-3-carboxylate

H. Rehman
Z. Ali
T. G. Shahzady
M. A. Abid
S. Nazir
H. Hussain
A. Zahra
I. Hussain


ABSTRACT. A novel silver complex [Ag(C12H9O5)2] was synthesized by the reaction of silver salt (AgNO3)and coumarin based ligand (ethyl-5-hydroxy-2-oxo-2H-Chromene-3-carboxylate) at room temperature. The synthesized complex was characterized by using different analytical techniques like melting point (mp), infrared (IR) spectroscopy, powder X-ray diffraction (PXRD), thermo gravimetric analysis (TGA), atomic absorption spectroscopy (AAS) and mass spectrometry (ESI-MS). Ligand showed activity with MIC 20 µg/mL, 15 µg/mL, 15 µg/mL for S. aurues, E. coli and S. typhi, respectively whereas MIC values of Ag-complex for above mentioned bacterial strains were found to be 15 µg/mL, 10 µg/mL, 10 µg/mL, respectively.  Ligand could not inhibit the growth of B. Subtilis, P. auruginosa, MRSA but Ag-complex showed MIC 30 µg/mL, 25 µg/mL for B. Subtilis and P. auruginosa. It also remained ineffective against MRSA.


KEY WORDS: Silver complex, Ethyl-5-hydroxy-2-oxo-2H-Chromene-3-carboxylate, Antibacterial study


Bull. Chem. Soc. Ethiop. 2019, 33(3), 467-474. 


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eISSN: 1726-801X
print ISSN: 1011-3924