Research Article: A triclinic polymorph of poly[[bis­[μ-1,2-bis­(pyridin-4-yl)ethene-κ2N:N′]bis­(thio­cyanato-κN)cobalt(II)] 1,2-bis­(pyridin-4-yl)ethene monosolvate]

Date Published: June 01, 2012

Publisher: International Union of Crystallography

Author(s): Susanne Wöhlert, Inke Jess, Christian Näther.


In the crystal structure of the title compound, [Co(NCS)2(C12H10N2)2]·C12H10N2, the CoII cations are octa­hedrally coordinated by two terminally N-bonded thio­cyanate anions and four 1,2-bis­(pyridin-4-yl)ethene (bpe) ligands. The asymmetric unit consists of three crystallographically independent CoII cations, six thio­cyanate anions and six coordinating bpe ligands in general positions. Additionally, three non-coordin­ating bpe ligands are present in the asymmetric unit with two of them located on a center of inversion. The CoII cations are connected by the bpe ligands into layers parallel to the bc plane. The crystal investigated was non-merohedrically twinned, with a fractional contribution of 0.261 (2) for the minor domain.

Partial Text

For background to this work see: Boeckmann & Näther (2010 ▶), Wriedt et al. (2009 ▶). For the monoclinic polymorph of the title compound, see: Wöhlert et al. (2011 ▶).