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Acta Crystallogr Sect E Struct Rep Online. 2011 Oct 1;67(Pt 10):o2741. doi: 10.1107/S1600536811037949. Epub 2011 Sep 30.

4-[Bis(3-phenyl-1H-pyrazol-1-yl)meth-yl]benzene-1,2-diol.

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1
Institut für Anorganische Chemie, J. W. Goethe-Universität Frankfurt, Max-von-Laue-Strasse 7, 60438 Frankfurt/Main, Germany.

Abstract

The title compound, C(25)H(20)N(4)O(2), is a ditopic ortho-hydro-quinone-based bis-(pyrazol-1-yl)methane ligand. The dihedral angles between the planes of the pyrazole rings and their attached phenyl rings are 17.4 (3) and 5.9 (4)°. The pyrazole rings make a dihedral angle of 87.84 (16)°. One of the two hy-droxy groups forms an intra-molecular hydrogen bond to the other hy-droxy group, whereas the second is involved in an inter-molecular O-H⋯N hydrogen bond. As a result of these inter-molecular hydrogen bonds, helical chains running along the b axis are formed.

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