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Keywords:

  • crystal engineering;
  • microporous materials;
  • nanotubes;
  • self-assembly;
  • topochemistry
Thumbnail image of graphical abstract

Dragon's lair: A large, single-walled metal–organic nanotube (MONT) with an exterior diameter of up to 3.2 nm and an internal channel diameter of 1.4 nm is presented. The tube can be depicted as hexastranded helices consisting of three right-handed and three left-handed helical chains, and resembles a rolled-up dragon column (see picture). The MONTs are held together by alkaline ions to form unique nanotubular arrays.