Intramolecular sp2-CH···O Interaction in the Single Crystal of Macrocyclic Polyethers with an Isobutenyl Group
Effects of the ring size on the conformation in the macrocyclic polyethers with an isobutenyl group have been studied by X-ray crystallography: the intramolecular CH···O interaction has been observed in the compound having 22 membered macrocyclic ring.