# Aqua[N-(2,5-dihydroxybenzyl)imino-diacetato]copper(II).
> アクア[N-(2,5-ジヒドロキシベンジル)イミノジアセタト]銅(II)錯体の結晶構造


## Abstract

This study reports the crystal structure of the copper(II) complex [Cu(C11H11NO6)(H2O)], in which the Cu(II) center adopts a distorted square-pyramidal coordination geometry. The basal plane is occupied by one coordinated water molecule, two carboxylate oxygen atoms, and one nitrogen atom from the tetradentate ligand, with Cu-O distances ranging from 1.9376 to 1.9541 Å and a Cu-N distance of 1.9929 Å. The apical position is filled by a hydroquinone oxygen donor at a Cu-O distance of 2.3746 Å. Intermolecular hydrogen bonding, involving both hydroquinone hydroxyl groups and the coordinated water molecule as donors, establishes a three-dimensional supramolecular framework.

## Bibliographic

- **Authors**: Zhang XQ, Huang FP, Bian HD, Yu Q, Liang H
- **Journal**: Acta Crystallogr Sect E Struct Rep Online
- **Year**: 2009 (2009-10-17)
- **PMID**: [21578137](https://pubmed.ncbi.nlm.nih.gov/21578137/)
- **DOI**: [10.1107/S1600536809042238](https://doi.org/10.1107/S1600536809042238)
- **PMC**: [PMC2971235](https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2971235/)
- **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 21578137. https://h2-papers.org/en/papers/21578137
> **Source**: PubMed PMID [21578137](https://pubmed.ncbi.nlm.nih.gov/21578137/)