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• W930774294 endingPage "360" @default.
• W930774294 startingPage "355" @default.
• W930774294 abstract "6-(3,5-Dimethylpyrazol-1-yl)purine has recently been introduced as an artificial nucleobase for the specific recognition of canonical nucleobases via the formation of a metal-mediated base pair. We report here the synthesis and structural characterization by single crystal X-ray diffraction analysis of a series of metal complexes of the corresponding alkylated model nucleobases 9-methyl-6-(3,5-dimethylpyrazol-1-yl)purine 2 and 9-methyl-6-pyrazol-1-yl-purine 7. The sterically more demanding ligand 2 forms the Cu(2+) complexes [Cu(2)(NO3)2] and [Cu(2)Cl2] with a 1:1 stoichiometry of ligand and metal ion. In contrast, ligand 7 forms complexes [Cu(7)2(NO3)](NO3) and [Ag(7)2](ClO4) with a 2:1 stoichiometry. The molecular structures of [Cu(2)(NO3)2] and [Cu(2)Cl2] confirm the previously suggested coordination pattern, i.e. Cu(2+) is coordinated via the pyrazole nitrogen atom and the purine N7 position. The fact that different relative orientations of the two ligands in [Cu(7)2(NO3)](NO3) and [Ag(7)2](ClO4) are observed allows the prediction that the corresponding metal-mediated homo base pairs should be stable both in regular antiparallel-stranded and in the rare parallel-stranded double helices." @default.
• W930774294 created "2016-06-24" @default.
• W930774294 creator A5008177032 @default.
• W930774294 creator A5037307611 @default.
• W930774294 creator A5047933492 @default.
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• W930774294 date "2015-12-01" @default.
• W930774294 modified "2023-09-25" @default.
• W930774294 title "Metal complexes of 6-pyrazolylpurine derivatives as models for metal-mediated base pairs" @default.
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• W930774294 doi "https://doi.org/10.1016/j.jinorgbio.2015.07.002" @default.
• W930774294 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/26277413" @default.
• W930774294 hasPublicationYear "2015" @default.
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