Pyxophanes: selective gas phase ion complexation by 1,6,13,18-tetraoxa[6.6]paracyclophane-3,15-diyne

Abstract

Compound 1, synthesized from hydroquinone and 1,4-dichlorobut-2-yne, was characterized by X-ray crystallography and shown by electrospray ionization mass spectrometry to form 1∶1 complexes with sodium and 2∶1 complexes with potassium cation.