Département de chimie moléculaire

The intramol. π-dimerization between two 4,4'-bipyridinium cation radicals directly connected to the wide rim of a calixarene is described. The ability of a phenol-contg. calixarene to dimerize in its two-electron-reduced state depends on a subtle balance of weak interactions assocd. with hydrogen bond formation on the lower rim and orbital overlap between π-radicals on the upper rim. [on SciFinder(R)]