Competitive isomerization and dimerization in co-crystals of 1, 1, 6, 6-tetraphenyl-2, 4-hexadiyne-1, 6-diol and sorbic acid: a new look at stereochemical requirements …
SL Zheng, O Pham, CMLV Velde, M Gembicky…
文献索引：Zheng, Shao-Liang; Pham, Oanh; Vande Velde, Christophe M. L.; Gembicky, Milan; Coppens, Philip Chemical Communications, 2008 , # 22 p. 2538 - 2540
Competitive [2+ 2] photodimerization and E→ Z isomerization reactions occur in a co-crystal of 1, 1, 6, 6-tetraphenyl-2, 4-hexadiyne-1, 6-diol upon irradiation with 325 nm light. At 90 K both reactions are observed, whereas at 280 K the dimerization reaction is very fast and inhibits isomerization as the nature of the chromophore is affected by the reaction. The temperature dependence of the stereospecificity of the dimerization reaction is related to ...
