Acta Crystallographica Section E

Structure Reports Online

Volume 69, Part 6 (June 2013)

metal-organic compounds

Acta Cryst. (2013). E69, m320-m321    [ doi:10.1107/S1600536813012312 ]

catena-Poly[[[di­aqua­bis­(seleno­cyanato-[kappa]N)iron(II)]-[mu]-1,2-bis­(pyridin-4-yl)ethane-[kappa]2N:N'] 1,2-bis­(pyridin-4-yl)ethane disolvate dihydrate]

S. Wöhlert, I. Jess and C. Näther

Abstract: The title compound, {[Fe(NCSe)2(C12H12N2)(H2O)2]·2C12H12N2·2H2O}n, was obtained by the reaction of iron(II) sulfate hepta­hydrate and potassium seleno­cyanate with 1,2-bis­(pyridin-4-yl)ethane (bpa) in water. The FeII cation is coordinated by two N-bonded seleno­cyanate anions, two water mol­ecules and two 1,2-bis­(pyridin-4-yl)ethane (bpa) ligands in a slightly distorted octa­hedral geometry. In addition, two non-coordinating bpa mol­ecules and two water mol­ecules are present. The FeII cation is located on a center of inversion while the coordinating bpa ligand is located on a twofold rotation axis. The FeII cations are linked by the bpa ligands into chains along the b-axis direction, which are further connected into layers perpedicular to the c axis by O-H...N and O-H...O hydrogen bonds to the non-coordin­ating bpa and the water mol­ecules. The crystal studied was twinned by pseudo-merohedry (180° rotation along c*; contribution of the minor twin component 3.7%).

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