Crystal structure of high-spin tetra-aqua-bis-(2-chloro-pyrazine-κN (4))iron(II) bis-(4-methyl-benzene-sulfonate).
The title salt, [Fe(II)(C4H3ClN2)2(H2O)4](C7H7O3S)2, contains a complex cation with point group symmetry 2/m. The high-spin Fe(II) cation is hexa-coordinated by four symmetry-related water and two N-bound 2-chloro-pyrazine mol-ecules in a trans arrangement, forming a distorted FeN2O4 octa-hedron. The three-dimensional supra-molecular structure is supported by inter-molecular O-H⋯O hydrogen bonds between the complex cations and tosyl-ate anions, and additional π-π inter-actions between benzene and pyrazine rings. The methyl H atoms of the tosyl-ate anion are equally disordered over two positions.
Department of Chemistry, Taras Shevchenko National University of Kyiv, Volodymyrska st. 64/13, Kyiv 01601, Ukraine.
Bohdan O
BO
Golub
Department of Chemistry, Taras Shevchenko National University of Kyiv, Volodymyrska st. 64/13, Kyiv 01601, Ukraine.
Sergii I
SI
Shylin
Institute of Inorganic Chemistry, Georg-August-University Göttingen, Tammannstrasse 4, Göttingen D-37077, Germany.
Sebastian
S
Dechert
Department of Chemistry, Taras Shevchenko National University of Kyiv, Volodymyrska st. 64/13, Kyiv 01601, Ukraine.
Maria L
ML
Malysheva
Department of Chemistry, Taras Shevchenko National University of Kyiv, Volodymyrska st. 64/13, Kyiv 01601, Ukraine.
Il'ya A
IA
Gural'skiy
2-chloro­pyrazine; crystal structure; hydrogen bonding; iron(II) complex; π–π contacts