Molecules at close range: encapsulated solvent molecules in pyrogallol[4]arene hexameric capsules.

[reaction: see text] Pyrogallol[4]arenes form hexameric capsules with a large cavity and can be regarded as nanoreactors. The (1)H NMR signals of the encapsulated chloroform and benzene molecules are very complex, which may indicate that these encapsulated molecules are trapped in slightly different capsules. Co-encapsulation was found to be favored, and the ASIS effect was found to be enhanced, probably due to the close proximity and the higher molecular fraction of the benzene/chloroform complex in the capsule.