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J Am Chem Soc. 2005 Mar 9;127(9):2798-9.

Endohedral clusterization of ten water molecules into a "molecular ice"within the hydrophobic pocket of a self-assembled cage.

Author information

1
Department of Applied Chemistry, School of Engineering, The University of Tokyo and CREST, Japan Science and Technology Agency, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.

Abstract

An adamantanoid (H2O)10 cluster is formed within the hydrophobic cavity of a self-assembled coordination cage. This cluster is termed "molecular ice" because it is the smallest unit of naturally occurring Ic-type ice. X-ray structural analysis, coupled with neutron diffraction study, reveals that the molecular ice is formed not by a simple space-filling effect but by efficient molecular recognition within the cage via H2O:...pi interaction.

PMID:
15740084
DOI:
10.1021/ja043953w

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