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Synthesis, Crystal Structure, Quantum Chemical Calculations, DNA Interactions, and Antimicrobial Activity of [Ag(2-amino-3-methylpyridine)2]NO3 and [Ag(pyridine-2-carboxaldoxime)NO3]

Morsy A. M. Abu-Youssef ; Saied M. Soliman ; Vratislav Langer (Institutionen för kemi- och bioteknik, Oorganisk miljökemi) ; Yousry M. Gohar ; Ahmed A. Hasanen ; Mohamed Makhyoun ; Amira H. Zaky ; Lars Öhrström (Institutionen för kemi- och bioteknik, Fysikalisk kemi)
Inorganic Chemistry (0020-1669). Vol. 49 (2010), 21, p. 9788-9797.
[Artikel, refereegranskad vetenskaplig]

[Ag(2-amino-3-methylpyridine)2]NO3 (1) and [Ag(pyridine-2-carboxaldoxime)NO3] (2) were prepared from corresponding ligands and AgNO3 in water/ethanol solutions, and the products were characterized by IR, elemental analysis, NMR, and TGA. The X-ray crystal structures of the two compounds show that the geometry around the silver(I) ion is bent for complex 1 with nitrate as an anion and trigonal planar for complex 2 with nitrate coordinated. ESI-MS results of solutions of 2 indicate the independent existence in solution of the [Ag(pyridine-2-carboxaldoxime)]+ ion. The geometries of the complexes are well described by DFT calculations using the ZORA relativistic approach. The compounds were tested against 14 different clinically isolated and four ATCC standard bacteria and yeasts and also compared with 17 commonly used antibiotics. Both 1 and 2 exhibited considerable activity against S. lutea, M. lutea, and S. aureus and against the yeast Candida albicans, while 2-amino-3-methylpyridine is slightly active and pyridine-2-carboxaldoxime shows no antimicrobial activity. In addition, the interaction of these metal complexes with DNA was investigated. Both 1 and 2 bind to DNA and reduce its electrophoretic mobility with different patterns of migration, while the ligands themselves induce no change.

Nyckelord: Silver(I), antimicrobial activity



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Denna post skapades 2010-10-28. Senast ändrad 2015-07-02.
CPL Pubid: 128296

 

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Institutioner (Chalmers)

Institutionen för kemi- och bioteknik, Oorganisk miljökemi (2005-2014)
Institutionen för kemi- och bioteknik, Fysikalisk kemi (2005-2014)

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