Fig. 1. Experimental (black traces) and simulated (red traces) solid-state 17O NMR spectra for a total of six site-specifically 17O-labeled α-d-glucose compounds under the MAS (22 kHz sample spinning) and static conditions at 21.1 and 14.1 T. The 17O NMR parameters used in the spectral simulations are summarized in Table 1. The same set of parameters were used for each compound to simulate spectra obtained at two magnetic fields. Detailed acquisition parameters are given in the ESI.†.
