Acta Cryst. (2013). E69, o127-o128
[ doi:10.1107/S160053681205091X ]
Abstract: The asymmetric unit of the title compound, C11H12N2O·C25H28N4O2, contains two different molecules. The smaller is known as antipyrine [systematic name: 1,5-dimethyl-2-phenyl-1H-pyrazol-3(2H)-one] and the larger is built up from two antypirine molecules which are connected through a C atom of the pyrazolone ring to a central propanyl part [systematic name: 4,4'-(propane-2,2-diyl)bis[1,5-dimethyl-2-phenyl-1H-pyrazol-3(2H)-one]. Intramolecular C-HO hydrogen bonds occur in the latter molecule. In the crystal, C-HO hydrogen bonds link the molecules into a two-dimensional network parallel to (001).
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