Water helicate (H2O)7, hosted by a diamondoid metal-organic framework

Abstract

A new form of water aggregate, viz., (H2O)7 helicate, has been trapped between the ClO4 - anions in the channels of a diamondoid metal-organic framework (MOF) where a small change in the structure of the backbone of the MOF from 1,10-phenanthroline to a 2,2′-bipyridine ligand transforms the cyclic to an acyclic water helicate. © The Royal Society of Chemistry 2009.