Add time:08/02/2019         Source:sciencedirect.com

The 1H{15N} heteronuclear correlation and 15N cross-polarized magic angle spinning NMR spectra of purine (1) were measured. The Zn(II) chloride complexes with 1, 7-methylpurine (2) and 9-methylpurine (3) were synthesised and studied by analytical methods, far-IR and 15N NMR. The formulae of ZnL2Cl2 (L=1) and [ZnLCl2]n (L=2, 3) were found. The formation of Zn(II)N coordination bonds resulted in 3–15 ppm low-frequency shifts of the respective 15N NMR signals: N-7 for 1; N-1, N-9 for 2; N-1, N-7 for 3.

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