Acta Crystallographica Section C

Crystal Structure Communications

Volume 68, Part 9 (September 2012)


organic compounds



uk3049 scheme

Acta Cryst. (2012). C68, o362-o364    [ doi:10.1107/S0108270112034749 ]

1,3-Ninhydrin dihydrazone featuring an R44(12) motif with \bf \overline{4} symmetry and comprising only N and H atoms

A. J. Blake, Y. Chebude, H. Tadesse and B. Wondimu

Abstract: In the title compound [systematic name: (1Z,3Z)-1,3-di­hydra­zin­yl­idene-1H-inden-2(3H)-one], C9H8N4O, isolated mol­e­cules possess approximate noncrystallographic C2v symmetry and their cis conformation and planarity are assisted by a pair of short intra­molecular N-H...O hydrogen bonds. Each mol­ecule is asymmetrically involved in an extensive three-dimensional network of N-H...O and N-H...N hydrogen bonds, and the structure also exhibits weaker [pi]-[pi] and C=O...C inter­actions. The structure features an R44(12) motif consisting solely of N and H atoms and possessing crystallographic \overline{4} symmetry.

Formula: C9H8N4O


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[ doi:10.1107/S0108270112034749/uk3049Isup3.cdx ]
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[ doi:10.1107/S0108270112034749/uk3049Isup4.cml ]
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