P 91 Pre-organization of diarylideneacetonyl crownophanes in single crystals to photochemical transformations / I. G. Ovchinnikova, E. V. Bartashevich, E. G. Matochkina, M. I. Kodess, P. A. Slepukhin, A. V. Druzhinin, O. V. Fedorova, G. L. Rusinov, V. N. Charushin // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2011. - Vol.60, №5. - С. 824-840 Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): CRYSTAL -- DIARYLIDENEACETONYL -- PHOTOCHEMICAL TRANSFORMATIONS Аннотация: Specific features of crystal packings and pre-organization of diarylideneacetonyl crownophane molecules to solid-phase photochemical transformations were studied on the basis of X-ray diffraction data using methods of simulation of molecular crystal packings. The tendency of the most part of the synthesized macrocyclic E,E-isomers to the formation of homochiral crystals (P212121) was revealed, while (23E,26E)-11,12,14,15-tetrahydro-8H-dinaphtho-[2,1-k:1′,2′-r][1,4,7,10]tetraoxacyclononadecine-23,26-dien-25(9H)-one is prone to polymorphism. A phenomenon of solid-phase stereospecific photochemical dimerization of molecules according to the syn-head-to-tail type without crystal destruction (single crystal—single crystal transformation) was found for one of the modifications of this crownophane \\\\Expert2\\nbo\\Russian Chemical Bulletin\\2011, 60 (5), 824-840.pdf |