Title of article :
Crystal structure of poly[(μ3-4-amino-1,2,5-oxadiazole-3-hydroxamato)thallium(I)]
Author/Authors :
Safyanova, Inna S. Department of Chemistry - National Taras Shevchenko University of Kyiv, Ukraine , Bondar, Oksana A. Department of Chemistry - National Taras Shevchenko University of Kyiv, Ukraine , Pavlishchuk, Anna V. Department of Chemistry - National Taras Shevchenko University of Kyiv, Ukraine , Omelchenko, Iryna V. SSI "Institute for Single Crystals" - National Academy of Sciences of Ukraine, Ukraine , Iskenderov, Turganbay S. Department of Chemistry - National Taras Shevchenko University of Kyiv, Ukraine , Kalibabchuk, Valentina A. Department of General Chemistry - O.O. Bohomolets National Medical University, Ukraine
Abstract :
The title compound represents the thallium(I) salt of a substituted 1,2,5-oxadiazole, [Tl(C3H3N4O3)]n, with amino- and hydroxamate groups in the 4- and 3- positions of the oxadiazole ring, respectively. In the crystal, the deprotonated hydroxamate group represents an intermediate between the keto/enol tautomers and forms a five-membered chelate ring with the thallium(I) cation. The coordination sphere of the cation is augmented to a distorted disphenoid by two monodentately binding O atoms from two adjacent anions, leading to the formation of zigzag chains extending parallel to the b axis. The cohesion within the chains is supported by π–π stacking [centroid–centroid distance = 3.746 (3) Å] and intermolecular N—H⋯N hydrogen bonds.
Keywords :
crystal structure , 1,2,5-oxadiazole , hydroxamic acid , thallium(I) , tautomerism
Journal title :
Acta Crystallographica Section E: Crystallographic Communications
