The Icosahedral Water Cluster as made up from Water Bicyclo-octamer Clusters

Water bicyclo-octameric cluster

Water icosahedron showing some of the possible bicyclo-octamer water structures. The left-hand animation includes all 280 water oxygen atoms whereas the right-hand animation contains 216 water oxygen atoms. All the water hydrogen atoms and some of the hydrogen bonds have been removed to simplify the animations.