# Bis(nitrato-κ)(1,4,8,11-tetra-aza-cyclo-tetra-decane-κ)zinc(II) methanol monosolvate.
> 亜鉛(II)シクラム錯体のビス(硝酸塩)メタノール溶媒和物の結晶構造解析


## Abstract

This study reports the crystal structure of a zinc(II) complex coordinated by 1,4,8,11-tetraazacyclotetradecane (cyclam) with two nitrate ligands as a methanol monosolvate. Each zinc center adopts a distorted octahedral geometry, with cyclam nitrogen atoms occupying the equatorial plane and nitrate oxygen atoms at the axial positions. The cyclam ring adopts a type-III conformation (δδλλ), consistent with patterns observed in other metal-cyclam complexes. Nitrate anions participate in both intramolecular and intermolecular hydrogen bonding with the N-H groups of the Zn-cyclam unit. Combined with the methanol solvent molecule, this hydrogen-bonding network organizes the Zn-cyclam units into ribbon-like arrangements extending parallel to the crystallographic a-axis.

## Bibliographic

- **Authors**: Ichimaru Y, Kato K, Kurihara M, Jin W, Koike T, Kurosaki H
- **Journal**: IUCrdata
- **Year**: 2022
- **PMID**: [36340980](https://pubmed.ncbi.nlm.nih.gov/36340980/)
- **DOI**: [10.1107/S2414314622008549](https://doi.org/10.1107/S2414314622008549)
- **PMC**: [PMC9635416](https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9635416/)
- **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 36340980. https://h2-papers.org/en/papers/36340980
> **Source**: PubMed PMID [36340980](https://pubmed.ncbi.nlm.nih.gov/36340980/)