Synthesis, binding properties and crystal structure of a hemicarcerand containing four pentamethylenedioxy groups spanning two bowls

Abstract

Hemicarcerand 1, whose synthesis from two tetrol bowls and four pentamethylene ditosylate molecules was templated by veratrole, was found to bind in solution (one-to-one) eighteen different guests; the crystal structure of 1⊙4MeCN is centrosymmetric; hemicarcerand 2, containing four hexamethylenedioxy groups, is also discussed.