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Inicio » Actividades I+D > Publicaciones 2013 > Tetraaqua(4,4′-dimethyl-2,2′-bipyridine-...
artículo con referato
"Tetraaqua(4,4′-dimethyl-2,2′-bipyridine-κ2N,N′)nickel(II) sulfate monohydrate: a simple molecule with an extremely complex hydrogen-bonding scheme"
Sebastián Suarez, Fabio Doctorovich, Miguel Angel Harvey and Ricardo Baggio
Acta Cryst. C 69(4) (2013) 351-355
The title ionic compound, [Ni(C12H12N2)(H2O)4]SO4·H2O, is composed of an NiII cation coordinated by a chelating 4,4′-dimethyl-2,2′-bipyridine ligand via its two N atoms [mean Ni-N = 2.056(2) Å] and by four aqua ligands [mean Ni-O = 2.073(9) Å], the net charge being balanced by an external sulfate anion. The whole structure is stabilized by a solvent water molecule. Even though the individual constituents are rather featureless, they generate an extremely complex supramolecular structure consisting of a central hydrogen-bonded two-dimensional hydrophilic nucleus made up of complex cations, sulfate anions and coordinated and solvent water molecules, with pendant hydrophobic 4,4′-dimethyl-2,2′-bipyridine ligands which interact laterally with their neighbours via ππ interactions. The structure is compared with closely related analogues in the literature.
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