Anion- and solvent-dependent photochemical decomplexation of sodium salt complexes of a calix[4]arene tetraester
Abstract
Sodium salt complexes of p-tert-butylcalix[4]arene tetraethyl acetate, where the anion is iodide, bromide, thiocyanate, perchlorate, tetraphenylborate, tetrafluoroborate or hexafluoroantimonate undergo a solvent-dependent decomplexation when irradiated with a low-pressure mercury lamp; photocleavage or photoisomerisation of the calixarene is not observed.