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. 2020 Feb 6;11:744. doi: 10.1038/s41467-020-14576-7

Fig. 5. X-ray crystal structures of crown ether carbamate and sulfonamide axle rotaxanes.

Fig. 5

a Rotaxane 19. Hydrogen bond lengths [Å]: O2—H26C, 2.53; O2—H27C, 2.88; O9—H1N, 2.27; O10—H1N, 2.65. Hydrogen bond angles (deg): O2—H26C, 155.4; O2—H27C, 142.7; O9—H1N, 154.4; O10—H1N, 135.0. b Rotaxane 20. Hydrogen bond lengths [Å]: O1—H24C, 2.50; O1—H39C, 2.64; O8—H1N, 2.31; O9—H1N, 2.61. Hydrogen bond angles (deg): O1—H24C, 149.3; O1—H39C, 144.8; O8—H1N, 145.6; O9—H1N, 144.9. NH···O and CH···O hydrogen bonds shown in dark green. Solvate molecules and other hydrogen atoms omitted for clarity.