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Inicio » Actividades I+D > Publicaciones 2010 > Structural study of a new 1-(2-thienyl)-...
artículo con referato
"Structural study of a new 1-(2-thienyl)-3-(3-methyl-2-thienyl)-propenone, in-situ radiation-induced dimerization products"
Y. Moreno, D. Contreras, A. Buljan, F. Brovelli and R. Baggio
J. Chil. Chem. Soc., 55, Nº4 (2010) 519-521
The new conjugated system (“chalcone kind”) reported herein, 1-(2-thienyl)-3-(3-methyl-2-thienyl)-propenone, C12H10OS2 presents a monomeric molecular structure, and it most interesting aspects are to be found in it intermolecular interactions, of varied type (C–HO, C–Hπ, ππ) and strength. Some anomalies detected in the refinement process, however, provided evidence that an unexpected in-situ, radiation-induced dimerization reaction had taken place during data collection, with the starting and final products coexisting in a topotactic fashion. This effect is depended of structural packing; that is not all this kind of conjugated system presents this effect. The main factor is the distance between the double bonds of neighboring monomers (about 3 Å).
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