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Acta Cryst. (2013). E69, m280
[ doi:10.1107/S1600536813010362 ]

Pyridinium bis(pyridine-[kappa]N)tetrakis(thiocyanato-[kappa]N)ferrate(III)-pyrazine-2-carbonitrile-pyridine (1/4/1)

S. I. Shylin, I. A. Gural'skiy, M. Haukka and I. A. Golenya

Abstract: In the title compound, (C5H6N)[Fe(NCS)4(C5H5N)2]·4C5H3N3·C5H5N, the FeIII ion is located on an inversion centre and is six-coordinated by four N atoms of the thiocyanate ligands and two pyridine N atoms in a trans arrangement, forming a slightly distorted octahedral geometry. A half-occupied H atom attached to a pyridinium cation forms an N-H...N hydrogen bond with a centrosymmetrically-related pyridine unit. Four pyrazine-2-carbonitrile molecules crystallize per complex anion. In the crystal, [pi]-[pi] stacking interactions are present [centroid-centroid distances = 3.6220 (9), 3.6930 (9), 3.5532 (9), 3.5803 (9) and 3.5458 (8) Å].

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