Abstract
The asymmetric unit of the title hydrated complex salt, (C18H14N5)2[Pt(CN)4]·4H2O, consists of one 2-[2,5-bis(pyridin-2-yl)-1H-imidazol-4-yl]pyridinium cation, half a tetracyanidoplatinate(II) dianion, which is located about a crystallographic inversion center, and two water molecules of crystallization. The PtII atom has a square-planar coordination environment, with Pt—CCN distances of 1.992 (4) and 2.000 (4) Å. In the cation, there is an N—H⋯N hydrogen bond linking adjacent pyridinium and pyridine rings in positions 4 and 5. Despite this, the organic component is non-planar, as shown by the dihedral angles of 10.3 (2), 6.60 (19) and 15.66 (18)° between the planes of the central imidazole ring and the pyridine/pyridinium substituents in the 2-, 4- and 5-positions. In the crystal, cations and anions are linked via O—H⋯O, O—H⋯N and N—H⋯O hydrogen bonds, forming a three-dimensional network. Additional π–π, C—H⋯O and C—H⋯N contacts provide stabilization to the crystal lattice.
Highlights
The asymmetric unit of the title hydrated complex salt, (C18H14N5)2[Pt(CN)4]4H2O, consists of one 2-[2,5-bis(pyridin-2-yl)-1H-imidazol-4-yl]pyridinium cation, half a tetracyanidoplatinate(II) dianion, which is located about a crystallographic inversion center, and two water molecules of crystallization
Cations and anions are linked via O—H O, O—H N and N—H O hydrogen bonds, forming a three-dimensional network
H atoms treated by a mixture of independent and constrained refinement max = 3.10 e Å3
Summary
Luis Encinas S/N, Col. Centro, Edificio 3G, CP 83000, Hermosillo, Sonora, México, bCentro de Investigaciones Quimicas, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, CP 62210, Cuernavaca, Morelos, México, and cFacultad de Ingenieria Mochis, Universidad Autónoma de Sinaloa, Fuente. (C18H14N5)2[Pt(CN)4]4H2O, consists of one 2-[2,5-bis(pyridin-2-yl)-1H-imidazol-4-yl]pyridinium cation, half a tetracyanidoplatinate(II) dianion, which is located about a crystallographic inversion center, and two water molecules of crystallization. There is an N—H N hydrogen bond linking adjacent pyridinium and pyridine rings in positions 4 and 5. The organic component is non-planar, as shown by the dihedral angles of 10.3 (2), 6.60 (19) and 15.66 (18) between the planes of the central imidazole ring and the pyridine/pyridinium substituents in the. Cations and anions are linked via O—H O, O—H N and N—H O hydrogen bonds, forming a three-dimensional network. Additional –, C—H O and C—H N contacts provide stabilization to the crystal lattice
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