Evaluating photodimerization of 6-methylcoumarin mediated by cucurbit[8]uril through mechanical grinding – Supramolecular effects of additives
作者:Barry C. Pemberton、Angel Ugrinov、J. Sivaguru
DOI:10.1016/j.jphotochem.2013.01.005
日期:2013.3
crystal X-ray determination of 1 from water reveals that the coumarins are oriented in a head-to-head fashion with the distance between the double bonds being 4.695 Å, a distance that is greater than the required Schmidt distance of 4.2 Å for efficient photodimerization in the crystalline state. Enhancement of photoreactivity of 1 upon mechanical grinding with additives appears to be the result of a combination