Conformational Representation and Nomenclature

Other designations that have been employed for the up/down orientation of the aryl groups are 

Bz higher priority than Pr both higher priority than H syn higher priority than anti 

The most definitive conformational representation of a calixarene is derived from X-ray crystallography, although even these pictures sometimes fail to 

Ugozzoli, F. Andreetti, G. D. J. Inclusion Phenom. Mol. Recoynit. Chem. 1992, 13, 337. 

Compound Conformation Adjacent groups Dihedral anglesf 4 1  

---