Electron transfer prompted ejection of a tightly bound K(+) from the ethereal cavity of a hexaarylbenzene-based receptor.
[structure: see text]. Synthesis of a pair of rotamers (9u/9s) of a hexaarylbenzene derivative containing six (cofacially arranged) electroactive 2,5-dimethoxytolyl groups is described. The toroidal electronic stabilization due to the circular arrangement of aryl groups in 9u/9s leads to the observation of multiple (reversible) oxidation waves and lowering of their E(ox1) by approximately 250 mV relative to model compounds. The binding of K+ to symmetrical rotamer 9s was monitored by an electrochemical method and further confirmed by X-ray crystallography.
Shukla
Ruchi
R
Department of Chemistry, Marquette University, Milwaukee, WI 53201, USA.
Lindeman
Sergey V
SV
Rathore
Rajendra
R