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Figure 8
Overlays of the 15N (60.8 MHz) CPMAS (12 kHz) spectra at room tem­per­ature of leucopterin hemihydrate and anhydrate acquired with different contact times to highlight signals due to protonated and non-protonated N-atom sites. Top: hemihydrate, acquired with contact times of 0.1 (red) or 4 ms (black); bottom: anhydrate, acquired with contact times of 0.1 (red) or 4 ms (black).

IUCrJ
Volume 10| Part 4| July 2023| Pages 448-463
ISSN: 2052-2525