Rational Design and X-ray Molecular Structure of the First Irido-Cryptand and Encapsulation of a Tetrafluoroborate Anion The CNRS and UPMC are gratefully acknowledged for supporting this work We thank Prof D Davoust and Dr E Condamine (IRCOF-Universite de Rouen France) for carrying out the special 13C{19F} NMR experiments on a 600 MHz Bruker instrument equipped with a TXO probe 13C/19F 1H