Received 21 June 2010
aDepartment of Chemistry, Islamia University, Bahawalpur, Pakistan, Applied Chemistry Research Center, PCSIR Laboratories Complex, Lahore 54600, Pakistan,bDepartment of Physics, University of Sargodha, Sargodha, Pakistan,cDepartment of Chemistry, Islamia University, Bahawalpur, Pakistan,dInstitute of Chemistry, University of the Punjab, Lahore, Pakistan, and eInstituto de Quimica, Universidade Estadual de Londrina, Londrina, Pr., Brazil
Correspondence e-mail: firstname.lastname@example.org
In the title compound, C14H13N5, the pyrazole ring is disordered over two orientations in a 0.571 (10):0.429 (10) ratio and the dihedral angle between the pyridazine ring and the benzene ring is 28.07 (10)°. In the crystal, pairs of N-HN and C-HN hydrogen bonds link the molecules into dimers, with the aid of a crystallographic twofold axis. The packing is consolidated by further C-HN bonds and weak C-H interactions.
Data collection: APEX2 (Bruker, 2007); cell refinement: SAINT (Bruker, 2007); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 for Windows (Farrugia, 1997) and PLATON (Spek, 2009); software used to prepare material for publication: WinGX (Farrugia, 1999) and PLATON.
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: HB5514 ).
The authors acknowledge the provision of funds for the purchase of diffractometer and encouragement by Dr Muhammad Akram Chaudhary, Vice Chancellor, University of Sargodha, Pakistan. The authors also acknowledge the technical support provided by Bana International, Karachi, Pakistan.
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