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2-Acetyl­pyridinium 3-amino-2-chloro­pyridinium tetra­chloridocobaltate(II)

Identifieur interne : 002826 ( Main/Exploration ); précédent : 002825; suivant : 002827

2-Acetyl­pyridinium 3-amino-2-chloro­pyridinium tetra­chloridocobaltate(II)

Auteurs : Ariel Adamski [Pologne] ; Violetta Patroniak [Pologne] ; Maciej Kubicki [Pologne]

Source :

RBID : PMC:2968359

Abstract

In the title complex, (C5H6ClN2)(C7H8NO)[CoCl4], the CoII ions are tetra­hedrally coordinated. The crystal structure is built from hydrogen-bonded centrosymmetric tetra­mers of tetra­chloridocobaltate(II) dianions and 3-amino-2-chloro­pyridinium cations, additionally strengthened by significant π–π stacking of pyridinium rings [interplanar distance 3.389 (3) Å]. The tetra­mers are linked by N—H⋯Cl hydrogen bonds into chains; the second kind of cations, viz. 2-acetyl­pyridinium, are connected by N—H⋯Cl hydrogen bonds to both sides of the chain. The Co—Cl bond lengths in the dianion correlate with the number of hydrogen bonds accepted by the Cl atom. An intramolecular C—H⋯Cl interaction is also present.


Url:
DOI: 10.1107/S1600536809000713
PubMed: 21581781
PubMed Central: 2968359


Affiliations:


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<p>In the title complex, (C
<sub>5</sub>
H
<sub>6</sub>
ClN
<sub>2</sub>
)(C
<sub>7</sub>
H
<sub>8</sub>
NO)[CoCl
<sub>4</sub>
], the Co
<sup>II</sup>
ions are tetra­hedrally coordinated. The crystal structure is built from hydrogen-bonded centrosymmetric tetra­mers of tetra­chloridocobaltate(II) dianions and 3-amino-2-chloro­pyridinium cations, additionally strengthened by significant π–π stacking of pyridinium rings [interplanar distance 3.389 (3) Å]. The tetra­mers are linked by N—H⋯Cl hydrogen bonds into chains; the second kind of cations,
<italic>viz.</italic>
2-acetyl­pyridinium, are connected by N—H⋯Cl hydrogen bonds to both sides of the chain. The Co—Cl bond lengths in the dianion correlate with the number of hydrogen bonds accepted by the Cl atom. An intramolecular C—H⋯Cl interaction is also present.</p>
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