Fig. 5: Selected regions of the 1H NMR spectra of macrocycle 11 (top), rotaxane 15 (middle) and thread 16 (bottom). | Nature Communications

Fig. 5: Selected regions of the 1H NMR spectra of macrocycle 11 (top), rotaxane 15 (middle) and thread 16 (bottom).

From: Ru(II)Porphyrinate-based molecular nanoreactor for carbene insertion reactions and quantitative formation of rotaxanes by active-metal-template syntheses

Fig. 5: Selected regions of the 1H NMR spectra of macrocycle 11 (top), rotaxane 15 (middle) and thread 16 (bottom).

Experimental conditions: 250 MHz, CDCl3, 298 K. Thread 16 was prepared aside for comparison purposes, using half-threads 13 and 14 as substrates and the acyclic version of 11 as promoter. Unambiguous proton assignments, including the HL signal in rotaxane 15 that overlaps with that of residual chloroform in the deuterated solvent, are based on 2D-NMR spectroscopy. Residual solvent peaks and aliphatic impurities are in gray: chloroform (δ = 7.26 ppm), water (δ = 1.56 ppm), “grease” (δ = 1.26 ppm and δ = 0.88 ppm) and silicone “grease” (δ = 0.07 ppm)52.

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