Title of article :
Crystal structure of 5-chloro-N1-(5-phenyl-1H-pyrazol-3-yl)benzene-1,2-diamine
Author/Authors :
Yartsev, Yegor V. N. Karazin Kharkiv National University, Ukraine , Palchikov, Vitaliy Oles Honchar Dnipropetrovsk National University, Ukraine , Gaponov, Alexandr Oles Honchar Dnipropetrovsk National University, Ukraine , Shishkina, Svitlana SSI "Institute for Single Crystals" - National Academy of Sciences of Ukraine, Ukraine
Abstract :
The title compound, C15H13ClN4, crystallizes with two independent molecules (A and B) in the asymmetric unit, which are far from planar as a result of steric repulsion between the rings. The benzene and phenyl rings are inclined to the central pyrazole ring by 46.64 (10) and 17.87 (10)° in molecule A, and by 40.02 (10) and 14.18 (10)° in molecule B. The aromatic rings are inclined to one another by 58.77 (9)° in molecule A, and 36.95 (8)° in molecule B. In the crystal, the A and B molecules are linked by two pairs of N—H⋯N hydrogen bonds forming A–B dimers. These are further linked by a fifth N—H⋯N hydrogen bond, forming tetramer-like units that stack along the a-axis direction, forming columns, which are in turn linked by C—H⋯π interactions, forming layers parallel to the ac plane.
Keywords :
crystal structure , pyrazol-3-amine , steric repulsion , hydrogen bonding
Journal title :
Acta Crystallographica Section E: Crystallographic Communications