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. Author manuscript; available in PMC: 2016 Apr 13.
Published in final edited form as: Angew Chem Int Ed Engl. 2015 Feb 18;54(16):4753–4757. doi: 10.1002/anie.201409888

Figure 2.

Figure 2

Molecular structures (a, d, where hydrogen atoms are omitted for clarity), experimental and simulated static (b,e) and MAS (c,f) 17O NMR spectra (21.1 T) of Cu([17O2]-DL-alanine)2·H2O and K2Cu([17O4]oxalate)2·2H2O. Simulated sub-spectra for individual sites are also shown in e) and f). The sample spinning frequency was 45.0 kHz in c) and f). Note that the signal integration for O3,O7,O8 is nearly three times of that for O1.