Journal of Nucleic Acids / 2012 / Article / Fig 1

Research Article

Metal Ion Chelates as Surrogates of Nucleobases for the Recognition of Nucleic Acid Sequences: The Pd2+ Complex of 2,6-Bis(3,5-dimethylpyrazol-1-yl)purine Riboside

Figure 1

1H NMR spectra of uridine (H5 and H1′) at various concentrations of uridine, 1 and Pd2+ at pH 7.3. (a) [Urd] = [1] = 3.6 mmol L−1, [Pd2+] = 2.52 mmol L−1; (b) [Urd] = [1] = 1.49 mmol L−1, [Pd2+] = 1.04 mmol L−1; (c) [Urd] = [1] = 0.57 mmol L−1, [Pd2+] = 0.40 mmol L−1; (d): [Urd] = [1] = 0.061 mmol L−1, [Pd2+] = 0.042 mmol L−1; (e) [Urd] = [1] = 13.84 mmol L−1, [Pd2+] = 0; (f) [Urd] = 3.6 mmol L−1, [Pd2+] = 2.52 mmol L−1; (g) [Urd] = 1.49 mmol L−1, [Pd2+] = 1.04 mmol L−1; (h) [Urd] = 0.57 mmol L−1, [Pd2+] = 0.40 mmol L−1; (i) [Urd] = 0.061 mmol L−1.
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