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Hunter and hunted is not only a principle of nature but is also found in host–guest systems. J. de Mendoza and co‐workers describe in their Communication on page 198 ff. how a host molecule (a small calix4arene or cavitand) can itself become the “prey” for a larger host (a metallocavitand made from a calix4arene with 3,8phenanthroline subunits linked through Re atoms). The cover picture shows the complexation of a cavitand (by P. Ballester) superimposed on an underwater picture at Cap Andritxol, Mallorca (by E. Botana).
Botana et al. (Tue,) studied this question.