Neon, cluster structure

Automated Approach for Clustering an Ensemble of NMR-Derived Protein Structures into Conformationally-Related Subfamilies. Available http //neon.ce.umist.ac.uk/nmrclust/pro-tocol.html. 

The simplest weakly-bound clusters are those built from noble gas atoms, such as neon and argon. What do we expect to be the optimal structure for one of these noble gas clusters, and how does the structure depend on the cluster size For that matter, can we even describe these clusters in terms of just one structure ... 

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