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Acta Cryst. (2003). E59, o873-o874 [ doi:10.1107/S160053680301078X ]
Abstract: A new polymorph of 3-phenylpyrazole, C9H8N2, is described. Whereas the already known polymorph has Z' = 6, the new one has Z' = 4. The pyrazole rings of the four molecules in the asymmetric unit are connected by N-H
N hydrogen bonds to form cyclic four-membered clusters. In two pyrazole rings, it is the N atom in position 1 that carries the H atom, whereas in the other two the N atom in position 2 carries the H atom. There are no further short contacts between symmetry-equivalent clusters.
Online 23 May 2003
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