Cramer, Friedrich D. Max-Planck Institut für Experimentelle Medizin, Göttingen, Germany.
Saenger, Wolfram Max-Planck Institut für Experimentelle Medizin, Göttingen, Germany.
Gauss, D. Max-Planck Institut für Experimentelle Medizin, Göttingen, Germany.
Last reviewed:October 2019
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Well-defined addition compounds formed by inclusion of molecules in cavities existing in crystal lattices or present in large molecules. The constituents are bound in definite ratios, but these are not necessarily integral. The components are not held together by primary valence forces, but are the consequence of a tight fit preventing the smaller partner, the guest, from escaping from the cavity of the host. Thus, the geometry of the molecules is the decisive factor.
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