Synthesis and crystal structure of poly[[di-μ₃-tetra-thio-anti-monato-tris-[(cyclam)cobalt(II)]] aceto-nitrile disolvate dihydrate] (cyclam = 1,4,8,11-tetra-aza-cyclo-tetra-deca-ne).

ABSTRACT: Reaction of Co(ClO₄)₂·6H₂O with cyclam (cyclam = 1,4,8,11-tetra-aza-cyclo-tetra-deca-ne) and Na₃SbS₄·9H₂O (Schlippesches salt) in a mixture of aceto-nitrile and water leads to the formation of crystals of the title compound with the composition {[Co₃(SbS₄)₂(C₁₀H₂₄N₄)₃]·2CH₃CN·2H₂O} _n or {[(Co-cyclam)₃(SbS₄)₂]·2(aceto-nitrile)·2H₂O} _n . The crystal structure of the title compound consists of three crystallographically independent [Co-cyclam]²⁺ cations, which are located on centers of inversion, one [SbS₄]^3- anion, one water and one aceto-nitrile mol-ecule that occupy general positions. The aceto-nitrile mol-ecule is disordered over two orientations and was refined using a split model. The Co^II cations are coordinated by four N atoms of the cyclam ligand and two trans-S atoms of the tetra-thio-anti-monate anion within slightly distorted octa-hedra. The unique [SbS₄]^3- anion is coordinated to all three crystallographically independent Co^II cations and this unit, with its symmetry-related counterparts, forms rings composed of six Co-cyclam cations and six tetra-thio-anti-monate anions that are further condensed into layers. These layers are perfectly stacked onto each other so that channels are formed in which acetontrile solvate mol-ecules that are hydrogen bonded to the anions are embedded. The water solvate mol-ecules are located between the layers and are connected to the cyclam ligands and the [SbS₄]^3- anions via inter-molecular N-H⋯O and O-H⋯S hydrogen bonding.

SUBMITTER: Nather C 

PROVIDER: S-EPMC8900515 | biostudies-literature | 2022 Feb

REPOSITORIES: biostudies-literature