Title of article :
Molecular and crystal structure of 5,9-dimethyl-5H-pyrano[3,2-c:5,6-c′]bis[2,1-benzothiazin]-7(9H)-one 6,6,8,8-tetroxide dimethylformamide monosolvate
Author/Authors :
Rybalka, Andrii V. N. Karazin Kharkiv National University, Ukraine , Shishkina, Svitlana SSI "Institute for Single Crystals" - National Academy of Sciences of Ukraine, Ukraine , Ukrainets, Igor National University of Pharmacy, Ukraine , Sidorenko, Lyudmila National University of Pharmacy, Ukraine , Sim, Galina Far Eastern State Medical University, Russian Federation
Abstract :
The title molecule crystallizes as a dimethylformamide monosolvate, C19H14N2O6S2·C3H7NO. The molecule was expected to adopt mirror symmetry but slightly different conformational characteristics of the condensed benzothiazine ring lead to point group symmetry 1. In the crystal, molecules form two types of stacking dimers with distances of 3.464 (2) Å and 3.528 (2) Å between π-systems. As a result, columns extending parallel to [100] are formed, which are connected to intermediate dimethylformamide solvent molecules by C—H⋯O interactions.
Keywords :
benzothiazine derivative , molecular structure , crystal structure , π-stacking dimer
Journal title :
Acta Crystallographica Section E: Crystallographic Communications
