title: Pyridinium bis-(pyridine-κN)tetra-kis-(thio-cyanato-κN)ferrate(III)-pyrazine-2-carbo-nitrile-pyridine (1/4/1).
abstract: In the title compound, (C5H6N)[Fe(NCS)4(C5H5N)2]·4C5H3N3·C5H5N, the Fe(III) ion is located on an inversion centre and is six-coordinated by four N atoms of the thio-cyanate ligands and two pyridine N atoms in a trans arrangement, forming a slightly distorted octa-hedral 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-carbo-nitrile mol-ecules crystallize per complex anion. In the crystal, π-π stacking inter-actions are present [centroid-centroid distances = 3.6220 (9), 3.6930 (9), 3.5532 (9), 3.5803 (9) and 3.5458 (8) Å].
authors.affiliation: Department of Chemistry, Taras Shevchenko National University of Kyiv, Volodymyrska 64/13, 01601 Kyiv, Ukraine.
authors.forename: Sergii I
authors.initials: SI
authors.lastname: Shylin
authors.forename: Il'ya A
authors.initials: IA
authors.lastname: Gural'skiy
authors.forename: Matti
authors.initials: M
authors.lastname: Haukka
authors.forename: Irina A
authors.initials: IA
authors.lastname: Golenya