Turowska-Tyrk Ilona
Department of Chemistry, Wrocław University of Technology, Wybrzeze Wyspiańskiego 27, 50-370 Wrocław, Poland.
Acta Crystallogr B. 2003 Oct;59(Pt 5):670-5. doi: 10.1107/s0108768103014484. Epub 2003 Sep 25.
The structural changes in a crystal of 5-benzylidene-2-(4-chlorobenzyl)cyclopentanone during [2 + 2]-photodimerization were monitored by means of X-ray diffraction. It was observed that the monomers moved gradually from the position occupied in the crystal at the initial stage of the photoreaction and the dimers moved towards the position assumed at the final step. The movements of the molecules possess a rotational component. Moreover, with the progress of the phototransformation the monomers in the reacting pair gradually move closer and change their relative orientation to resemble more the product molecule. The behaviour of the molecules and also the variation of the cell constants for the studied compound were compared with data for 5-benzylidene-2-benzylcyclopentanone.
通过X射线衍射监测了5-亚苄基-2-(4-氯苄基)环戊酮晶体在[2 + 2]光二聚反应过程中的结构变化。观察到单体在光反应初始阶段从晶体中占据的位置逐渐移动，而二聚体则朝着光反应最后阶段所占据的位置移动。分子的移动具有旋转分量。此外，随着光转化的进行，反应对中的单体逐渐靠近并改变它们的相对取向，更类似于产物分子。将所研究化合物的分子行为以及晶胞常数的变化与5-亚苄基-2-苄基环戊酮的数据进行了比较。
