No abstract

The macrobicyclic polyammonium receptor molecule 1-6H+ binds dicarboxylate substrates with linear recognition and forms with terephthalate a very stable dianion cryptate the crystal structure of which has been determined.

The hexacarboxylic macrobicycle 1 is a readily accessible water-soluble receptor molecule which binds strongly quaternary ammonium cations.

No abstract

The water-solu ble macrobicyclic cyclophane molecule 16-has been crystallized in two very different shapes that display the operation of medium, especially hydrophobic effects: an inflated cage structure building up cylinders disposed in an hexagonal array; a flattened structure stacked in molecular layers separated by aqueous layers in a lamellar arrangement.