Abstract: The direction of configurational bias and extent of chiral recognition have been determined for complexation between 8 different guests and 13 different hosts. Racemic guest in D20 was extracted by optically pure host in CDC13. From the signs and magnitudes of rotations of the guests recovered from each layer, the directions of configurational bias and differences in free energies between the diastereomeric complexes (A (AGo) values) ...