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Synthesis and crystal structure of catena-poly[cobalt(II)-di-μ-chlorido-μ-pyridazine-κ2N1:N2].

ABSTRACT: The reaction of cobalt dichloride hexa-hydrate with pyridazine leads to the formation of crystals of the title compound, [CoCl2(C4H4N2)]n. This compound is isotypic to a number of compounds with other divalent metal ions. Its asymmetric unit consists of a Co2+ atom (site symmetry 2/m), a chloride ion (site symmetry m) and a pyridazine mol-ecule (all atoms with site symmetry m). The Co2+ cations are coordinated by four chloride anions and two pyridazine ligands, generating trans-CoN4Cl2 octa-hedra, and are linked into [010] chains by pairs of μ-1,1-bridging chloride anions and bridging pyridazine ligands. In the crystal structure, the pyridazine ligands of neighboring chains are stacked onto each other, indicating π-π inter-actions. Powder X-ray diffraction proves that a pure crystalline phase was obtained. Differential thermonalysis coupled to thermogravimetry (DTA-TG) reveal that decomposition is observed at about 710 K. Magnetic measurements indicate low-temperature metamagnetic behavior as already observed in a related compound.

SUBMITTER: Nather C 

PROVIDER: S-EPMC10561210 | biostudies-literature | 2023 Oct

REPOSITORIES: biostudies-literature

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Synthesis and crystal structure of <i>catena</i>-poly[cobalt(II)-di-μ-chlorido-μ-pyridazine-κ<sup>2</sup><i>N</i><sup>1</sup>:<i>N</i><sup>2</sup>].

Näther Christian C   Jess Inke I  

Acta crystallographica. Section E, Crystallographic communications 20230908 Pt 10

The reaction of cobalt dichloride hexa-hydrate with pyridazine leads to the formation of crystals of the title compound, [CoCl<sub>2</sub>(C<sub>4</sub>H<sub>4</sub>N<sub>2</sub>)]<sub><i>n</i></sub>. This compound is isotypic to a number of compounds with other divalent metal ions. Its asymmetric unit consists of a Co<sup>2+</sup> atom (site symmetry 2/<i>m</i>), a chloride ion (site symmetry <i>m</i>) and a pyridazine mol-ecule (all atoms with site symmetry <i>m</i>). The Co<sup>2+</sup> catio  ...[more]

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