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The title compound, C15H13N5, crystallizes with two independent mol­ecules in the asymmetric unit. The mol­ecular conformations are stabilized by C—H...N contacts forming S(6) ring motifs. In the crystal, pairs of mol­ecules are connected into R22(12) dimers by N—H...N hydrogen bonds. C—H...π inter­actions and π–π stacking inter­actions [centroid–centroid distances = 3.6085 (8), 3.6657 (8), 3.4745 (8) and 3.5059 (8) Å] also also observed.

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In the title compound, C10H9N5, the phenyl ring is twisted with respect to the pyrazole ring, forming a dihedral angle of 24.00 (6)°. In the crystal, mol­ecules are linked by N—H...N hydrogen bonds into chains running parallel to [010] containing alternating R22(6) and R22(12) rings. Further inter­actions are found in the crystal, viz. N—H...π(phen­yl) inter­actions and weak face-to-face π–π stacking inter­actions [centroid–centroid distance = 3.8890 (6) Å] between the centroids of the pyrazole and phenyl rings are observed.
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