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Keywords:

  • hydrogen bonds;
  • self-assembly;
  • supramolecular chemistry;
  • water chemistry;
  • X-ray diffraction
Thumbnail image of graphical abstract

The role of hydrogen bonding in water is important in determining the structure, stability, and function of biological assemblies. The supramolecular structure of 1,4,7,10-tetraazacyclododecane, a molecule that has secondary N[BOND]H bonds similar to those found in biological systems, contains an infinite chain of tetrameric water clusters (depicted, oxygen: red; hydrogen: white). This motif, until now, has not even been speculated upon.