Complexes of DNA bases and gold clusters Au3 and Au4 involving nonconventional N-H...Au hydrogen bonding.
DNA base-gold interactions are studied theoretically at the DFT level using Au(3) and Au(4) clusters as simple catalytic models for Au particles. The bonding between DNA bases and gold clusters occurs via the anchoring of a Au atom to the N or O atoms of the bases. In the most stable planar base-Au(3) complexes, the Au-N or Au-O anchor bonds are reinforced by N-H...Au bonds. The mechanism of formation of these nonconventional H-bonds is discussed.
Kryachko
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Department of Chemistry, B6c, Université de Liège, B-4000 Liège, Belgium. eugene.kryachko@ulg.ac.be
Remacle
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D001482:Base Composition; D002384:Catalysis; D004247:DNA / Q000737:chemistry*; D006046:Gold / Q000737:chemistry*; D006860:Hydrogen Bonding; D008956:Models, Chemical; D009711:Nucleotides / Q000737:chemistry
D009711:Nucleotides; D006046:Gold; D004247:DNA