(E)-3-Amino-4-(2-phenylhydrazinylidene)-1H-pyrazol-5(4H)-one. Corrigendum

Elgemeie, Galal H.; Sayed, Shahinaz Hassan; Jones, Peter G.

doi:10.1107/s160053681303403x

Acta Crystallogr E Struct Rep Online

2013

DOI: 10.1107/s160053681303403x

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(E)-3-Amino-4-(2-phenylhydrazinylidene)-1H-pyrazol-5(4H)-one. Corrigendum

Galal H. Elgemeie¹,

Shahinaz Hassan Sayed²,

Peter G. Jones³

Abstract: Corrigendum to Acta Cryst. (2013), E69, o187.

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2014

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A second polymorph of (Z)-3-amino-4-(2-phenylhydrazinylidene)-1H-pyrazol-5(4H)-one

Elgazwy

Jones

2014

Acta Cryst E

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The molecule of the title compound, C9H9N5O, is approximately planar (the r.m.s. deviation of all non-H atoms is 0.08 Å). The amine substituent is pyramidal at the N atom. An intramolecular N—Hhydrazine⋯O=C hydrogen bond is present. In the crystal, molecules are connected via N—H⋯N and N—H⋯O hydrogen bonds, forming infinite layers parallel to (010). This polymorph is triclinic, space group P-1, whereas the previously reported form was monoclinic, space group P21/c [Elgemeie et al. (2013 ▶). Acta Cryst. E69, o187], with stepped layers and a significantly lower density.

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A second polymorph of (Z)-3-amino-4-(2-phenylhydrazinylidene)-1H-pyrazol-5(4H)-one

Elgazwy

Jones

2014

Acta Cryst E

Self Cite

View full text Add to dashboard Cite

show abstract

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(E)-3-Amino-4-(2-phenylhydrazinylidene)-1H-pyrazol-5(4H)-one. Corrigendum

Abstract: Corrigendum to Acta Cryst. (2013), E69, o187.

Cited by 1 publication

References 5 publications

A second polymorph of (Z)-3-amino-4-(2-phenylhydrazinylidene)-1H-pyrazol-5(4H)-one

A second polymorph of (Z)-3-amino-4-(2-phenylhydrazinylidene)-1H-pyrazol-5(4H)-one

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