Leucopterin, the white pigment in butterfly wings: structural analysis by PDF fit, FIDEL fit, Rietveld refinement, solid-state NMR and DFT-D

Bravetti, F.; Tapmeyer, L.; Skorodumov, K.; Alig, E.; Habermehl, S.; Hühn, R.; Bordignon, S.; Gallo, A.; Nervi, C.; Chierotti, M.R.; Schmidt, M.U.

doi:10.1107/S2052252523004281

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

https://doi.org/10.1107/S2052252523004281

CHEMISTRY | CRYSTENG

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