# Crystal structure of ()-2-{[(4-anilinophen-yl)imino]meth-yl}-4-nitro-phenol.
> フェノール-イミン互変異性体として結晶化する2-{[(4-アニリノフェニル)イミノ]メチル}-4-ニトロフェノールの結晶構造解析


## Abstract

The crystal structure of a nitrophenol-derived Schiff base compound was determined. The molecule adopts the phenol-imine tautomeric form. The dihedral angle between the two aromatic rings connected through the NH bridge measures 47.16°, while the rings linked by the imine group are nearly coplanar at 6.24°. An intramolecular O-H···N hydrogen bond stabilizes this near-planar arrangement, forming an S(6) ring motif. In the solid state, intermolecular N-H···O hydrogen bonds propagate along the [201] direction to produce one-dimensional chains, which are further interconnected by C-H···O contacts to form two-dimensional sheets parallel to the (001) plane.

## Bibliographic

- **Authors**: Faizi MS, Haque A, Kalibabchuk VA
- **Journal**: Acta Crystallogr E Crystallogr Commun
- **Year**: 2017 (2017-02-01)
- **PMID**: [28217322](https://pubmed.ncbi.nlm.nih.gov/28217322/)
- **DOI**: [10.1107/S2056989016020673](https://doi.org/10.1107/S2056989016020673)
- **PMC**: [PMC5290545](https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5290545/)
- **Study type**: other
- **Delivery route**: not specified
- **Effect reported**: not assessed

## Delivery context

The delivery route is not clearly identifiable from this paper. For hydrogen intake, inhalation is the most efficient route; inhalation, however, carries explosion risk (empirical LFL of 10%; high-concentration devices are not recommended).

## Safety notes

The delivery route is not clearly identifiable from this paper. For hydrogen intake, inhalation is the most efficient route; inhalation, however, carries explosion risk (empirical LFL of 10%; high-concentration devices are not recommended).

See also:
- [Inhalation concentration and LFL / UFL](https://h2-papers.org/en/safety-notes/inhalation-concentration)
- [Consumer Affairs Agency accident cases](https://h2-papers.org/en/safety-notes/accident-cases)

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> **Cite as**: H2 Papers — PMID 28217322. https://h2-papers.org/en/papers/28217322
> **Source**: PubMed PMID [28217322](https://pubmed.ncbi.nlm.nih.gov/28217322/)