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Figure 12
Chemical shift as a function of dilution (A→F) of 14 in CDCl3. In F, δ 6.88 (H2, H6 of 1), δ 6.74 (H4 of 6), δ 6.55 (H2, H6 of 6). A significant upfield shift of the H2, H6 protons of 1, combined with overall line-narrowing is observed upon dilution from E to F.

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