Abstract
The title ion-pair compound, (C7H7N2)2[Cu(C4N2S2)2], was obtained by the direct reaction of CuCl2·2H2O, disodium maleonitriledithiolate (Na2mnt) and 4-cyano-1-methylpyridinium iodide. The anion and one pyridinium cation lie entirely on a mirror plane, whereas for the other cation, a crystallographic mirror plane runs through the N and para-C atoms of the pyridine ring, the methyl C atom, and the cyano group. In the crystal, ions are linked into a three-dimensional network by C—H⋯N hydrogen bonds.
Highlights
The title ion-pair compound, (C7H7N2)2[Cu(C4N2S2)2], was obtained by the direct reaction of CuCl2Á2H2O, disodium maleonitriledithiolate (Na2mnt) and 4-cyano-1-methylpyridinium iodide
The anion and one pyridinium cation lie entirely on a mirror plane, whereas for the other cation, a crystallographic mirror plane runs through the N and para-C atoms of the pyridine ring, the methyl C atom, and the cyano group
Ions are linked into a three-dimensional network by C—HÁ Á ÁN hydrogen bonds
Summary
Key indicators: single-crystal X-ray study; T = 291 K; mean (C–C) = 0.005 A; R factor = 0.041; wR factor = 0.101; data-to-parameter ratio = 11.8. The title ion-pair compound, (C7H7N2)2[Cu(C4N2S2)2], was obtained by the direct reaction of CuCl2Á2H2O, disodium maleonitriledithiolate (Na2mnt) and 4-cyano-1-methylpyridinium iodide. The anion and one pyridinium cation lie entirely on a mirror plane, whereas for the other cation, a crystallographic mirror plane runs through the N and para-C atoms of the pyridine ring, the methyl C atom, and the cyano group. Ions are linked into a three-dimensional network by C—HÁ Á ÁN hydrogen bonds. For a study on CNÁ Á Á interactions, see: Tian et al (2007)
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