A neutral metallo-cavitand based on cis bis-perhaloaryl Pd(II) bridges co-ordinated at the corners of a deep calix[4]arene. Both the metallo-cavitand and its inclusion complexes with other calix[4]arenes were investigated by means of 1H and 19F NMR experiments.
![A deep tetranuclear metallo-cavitand with bis(aryl) palladium bridges](https://www.iciq.org/wp-content/uploads/2014/03/A-deep-tetranuclear-metallo_4752.gif)