There are two independent mol-ecules, A and B, in the asymmetric unit of the title compound, C(19)H(20)N(4), in each of which the N=N double bond has an E conformation. The dihedral angles between the pyrazole ring and the p-tolyl rings in the 1- and 4-positions are 22.54 (8) and 35.73 (7)°, respectively, in mol-ecule A. The corresponding dihedral angles in mol-ecule B are 28.13 (8) and 22.18 (8)°. In the crystal, the A and B mol-ecules are linked by weak C-H⋯π inter-actions, leading to inversion dimers in each case.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3275036 | PMC |
| http://dx.doi.org/10.1107/S1600536812000360 | DOI Listing |
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