# Ethyl 8-(4-nitro-phen-yl)imidazo[1,2-a]pyridine-7-carboxyl-ate.
> イミダゾ[1,2-a]ピリジン誘導体の結晶構造解析


## Abstract

The molecular geometry of C16H13N3O4 was characterized by X-ray crystallography. The imidazo[1,2-a]pyridine bicyclic system and the benzene ring are oriented at a dihedral angle of 56.21(2)°. Crystal packing stability arises from two types of intermolecular interactions: weak π-π stacking with centroid-to-centroid distances of 3.787(2) Å, and C-H···O hydrogen bonds between adjacent molecules.

## Bibliographic

- **Authors**: Duan GY, Zhang YJ, Hao BQ
- **Journal**: Acta Crystallogr Sect E Struct Rep Online
- **Year**: 2010 (2010-11-24)
- **PMID**: [21589555](https://pubmed.ncbi.nlm.nih.gov/21589555/)
- **DOI**: [10.1107/S1600536810047938](https://doi.org/10.1107/S1600536810047938)
- **PMC**: [PMC3011613](https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3011613/)
- **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 21589555. https://h2-papers.org/en/papers/21589555
> **Source**: PubMed PMID [21589555](https://pubmed.ncbi.nlm.nih.gov/21589555/)