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  • Title: Crystal structure of catena-poly[[[tetra-aqua-iron(II)]-trans-μ-1,2-bis-(pyridin-4-yl)ethene-κ2N:N'] bis-(p-toluene-sulfonate) methanol disolvate].
    Author: Hiiuk VM, Barakhty DD, Shova S, Polunin RA, Gural'skiy IA.
    Journal: Acta Crystallogr E Crystallogr Commun; 2017 Dec 01; 73(Pt 12):1977-1980. PubMed ID: 29250428.
    Abstract:
    In the title polymeric complex, {[Fe(C12H10N2)2(H2O)4](CH3C6H4SO3)2·2CH3OH} n , the FeII cation, located on an inversion centre, is coordinated by four water mol-ecules in the equatorial positions and two 1,2-bis-(pyridin-4-yl)ethene mol-ecules in the axial positions. This results in a distorted octa-hedral geometry for the [N2O4] coordination polyhedron. The 1,2-bis-(pyridin-4-yl)ethene mol-ecules bridge the FeII cations, forming polymeric chains running along the a-axis direction. Stabilization of the crystal structure is provided by O-H⋯O hydrogen bonds; these are formed by coordinated water mol-ecules as donors towards the O atoms of the methanol mol-ecules and tosyl-ate anions as acceptors of protons, leading to the formation of a three-dimensional supra-molecular network. Weak C-H⋯O hydrogen bonds are also observed in the crystal.
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