Four catenanes ( 1–4 ) and the corresponding tetracationic monocycles 5–8 are synthesized. X‐ray structural analyses allow a prediction of the mobility (circumrotation) of the „interlocked”︁ rings in the catenanes, which is proven by 1 H‐NMR spectroscopy. An unexpected order in the crystal packing of 6 is demonstrated. ( E/Z ) isomerization in one ring influences the second ring of 1–4 and inversely. An existing obstacle inside the cavity of the switchable macrocycle can block this isomerization completely.
No takes yet. Share an insight, caveat, or question.
Bauer et al. (1995) studied this question.
Synapse has enriched 4 closely related papers on similar clinical questions. Consider them for comparative context: