Closing Comments - Properties and Applications

It is certain that many new framework solids, some interpenetrating, will be discovered or constructed by deliberate design in the near future. Many new and undreamt of forms of entanglement will doubtless be revealed. 

We are grateful to the Australian Research Council and The American Chemical Society Petroleum Research Fund for support and to our colleagues Dr. Bernard Hoskins and Dr. Brendan Abrahams for many useful discussions. 

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