Etude structurale et vibrationnelle d'un nouveau compose complexe de cobalt: [Co(imidazole)4Cl]Cl.

ABSTRACT: In the title complex, chlorido-tetra-kis-(1H-imidazole-?N (3))cobalt(II) chloride, [CoCl(C3H4N2)4]Cl, the Co(II) cation has a distorted square-pyramidal coordination environment. It is coordinated by four N atoms of four imidazole (Im) groups in the basal plane, and by a Cl atom in the apical position. It is isostructural with [Cu(Im)4Cl]Cl [Morzyk-Ociepa et al. (2012 ?). J. Mol. Struct. 1028, 49-56] and [Cu(Im)4Br]Br [Hossaini Sadr et al. (2004 ?). Acta Cryst. E60, m1324-m1326]. In the crystal, the [CoCl(C3H4N2)4](+) cations and Cl(-) anions are linked via N-H?Cl hydrogen bonds, forming layers parallel to (010). These layers are linked via C-H?Cl hydrogen bonds and C-H?? and ?-? [inter-centroid distance = 3.794?(2)?Å] inter-actions, forming a three-dimensional framework. The IR spectrum shows vibrational bands typical for imidazol groups. The monoclinic unit cell of the title compound emulates an ortho-rhom-bic cell as its ? angle is close to 90°. The crystal is twinned, with the refined ratio of twin components being 0.569?(1):0.431?(1).

SUBMITTER: Derbel A 

PROVIDER: S-EPMC4647365 | biostudies-literature | 2015 Oct

REPOSITORIES: biostudies-literature