Mol-ecular and crystal structure of 5,9-dimethyl-5H -pyrano[3,2-c :5,6-c ']bis-[2,1-benzo-thia-zin]-7(9H )-one 6,6,8,8-tetroxide di-methyl-formamide monosolvate

Acta Crystallographica. Section E, Crystallographic Communications
Andrii RybalkaGalina Sim

Abstract

The title mol-ecule crystallizes as a di-methyl-formamide monosolvate, C19H14N2O6S2·C3H7NO. The mol-ecule was expected to adopt mirror symmetry but slightly different conformational characteristics of the condensed benzo-thia-zine ring lead to point group symmetry 1. In the crystal, mol-ecules 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 inter-mediate di-methyl-formamide solvent mol-ecules by C-H⋯O inter-actions.

References

Dec 25, 2007·Acta Crystallographica. Section A, Foundations of Crystallography·George M Sheldrick
Jan 9, 2015·Acta Crystallographica. Section C, Structural Chemistry·George M Sheldrick
Apr 7, 2016·Acta Crystallographica Section B, Structural Science, Crystal Engineering and Materials·Colin R GroomSuzanna C Ward

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