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. 2022 Dec 1;15(3):413–423. doi: 10.1038/s41557-022-01094-w

Fig. 4. NMR spectroscopic analysis and assignment of (OMe-cube)2.

Fig. 4

a, Full 1H NMR (600 MHz, CD2Cl2) spectrum of (OMe-cube)2. b,c, Partial 1H NMR (600 MHz, CD2Cl2) showing eight different types of imine peaks (b) and methoxy peaks (c) of (OMe-cube)2. d, NOESY spectrum showing cross-peaks between imine proton B and methoxy proton d. e, NOESY spectrum showing cross-peaks between methoxy protons b and d. f, NOESY spectrum showing cross-peaks between highly shielded aliphatic protons of propyl chains and methoxy protons e and f. g, Cartoon of the singly catenated cubes highlighting the 12 different magnetically equivalent imine protons. h, Cartoon of the triply interlocked catenated cube, highlighting the eight different magnetically equivalent imine protons. The colour code and assignment are the same as in b and c. i, Cartoons of the quadruply interlocked catenated cubes, highlighting the six different magnetically equivalent imine protons.