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Figure 13
(a) NOE difference spectra of solutions A, E and F. Negative NOE peaks are observed in the difference spectra at all three dilutions. The difference NOE peaks indicate that the hydrogen bonding between 1 and 6 is intact. (b) The saturation of the H2, H6 protons of 6 should result in a NOE effect on the H2, H6 protons of 1.

IUCrJ
Volume 1| Part 4| June 2014| Pages 228-239
ISSN: 2052-2525
doi:10.1107/S2052252514012081