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Probing the structure and dynamics of cage-like clusters: from water to Met-Cars

  • A. W. CastlemanJr.
Conference paper

Abstract

Elucidating the unique properties characteristic of systems of finite size provides a challenge of considerable current scientific interest [1]. In the case of hydrogen bonded clusters, studies of water clusters provide basic insight into the fundamentals of hydrogen bonding and solvation effects, as well as phenomena of importance in other fields such as atmospheric science [2]. The relationships between the physical and chemical properties and structures of water clusters have been studied under various experimental conditions using techniques ranging from cloud chambers to cooled flowtubes and supersonic molecule beams [3–11]. Other quantitative studies also have been made including ones devoted to measuring formation and dissociation rate constants, as well as rates of various intracluster reactions of hydrate clusters. A topic of considerable interest pertains to the origin of magic numbers, discontinuities at certain sizes in otherwise smoothly varying mass spectral distributions. A number of experiments and theoretical calculations provide evidence which shows that the magic numbers observed in the cluster distributions relate to stable structures, but until recently, other than the work of Kebarle [12] and Michl [13], there has been a paucity of experimental data on water cluster cations at large degrees of hydration, especially with regard to their thermochemical properties.

Keywords

Water Cluster Magic Number Molecular Cluster Cage Structure Dissociation Channel 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 1995

Authors and Affiliations

  • A. W. CastlemanJr.
    • 1
  1. 1.Department of ChemistryThe Pennsylvania State UniversityUniversity ParkUSA

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