Hydroquinone-induced framework based on direct coordination of rubidium ions to cucurbit[7]uril

A strategy of using organic guest-induced formation of polymers or frameworks based on the coordination of metal ions and cucurbit[n]urils was developed. Using this strategy, a compound with a stoichiometry of {Rb2(μ-OH)(H2O)2(Hyq@Q[7])2}·Cl has been synthesized. X-ray crystallography, shows the crystal structure to be a novel three dimensional infinite framework, constructed by the Q[7] pairs through the hydroquinone-induced coordination of the rubidium unit to the portal oxygens of the Q[7]s.