Crystal structure of bis-[1-(naphthalen-1-ylmeth-yl)pyridinium] bis-(2,2-di-cyano-ethene-1,1-di-thiol-ato-κ(2) S,S')nickelate(II)

Miao Zhang; Xu-Jie Xiong

doi:10.1107/S1600536814017012

Crystal structure of bis-[1-(naphthalen-1-ylmeth-yl)pyridinium] bis-(2,2-di-cyano-ethene-1,1-di-thiol-ato-κ(2) S,S')nickelate(II)

Acta Crystallogr Sect E Struct Rep Online. 2014 Jul 31;70(Pt 8):115-7. doi: 10.1107/S1600536814017012. eCollection 2014 Aug 1.

Authors

Miao Zhang¹, Xu-Jie Xiong²

Affiliations

¹ College of Chemical Engineering, Huanggang Normal University, 438000 Huangzhou, People's Republic of China.
² Hubei Key Laboratory for Processing and Application of Catalytic Materials, Huanggang Normal University, 438000 Huangzhou, People's Republic of China.

Abstract

A new ion-pair complex, (C16H14N)2[Ni(C4N2S2)2] or (1-NaMePy)2[Ni(imnt)2], where 1-NaMePy is 1-(4-naphthyl-methyl-ene)pyridinium and imnt is 2,2-di-cyano-ethene-1,1-di-thiol-ate, was obtained by the direct reaction of NiCl2, K2imnt and (1-NaMePy)(+)Br(-) in H2O. The asymmetric unit contains a [1-NaMePy](+) cation and one half of an Ni(imnt)2 (2-) anion. The Ni(II) ion lies on an inversion centre and adopts a square-planar configuration with Ni-S bond lengths of 2.200 (1) and 2.216 (1) Å. In the [1-NaMePy](+) cation, the naphthyl ringsystem and the pyridinium ring make a dihedral angle of 90.0 (2)°. In the crystal, C-H⋯N and C-H⋯Ni hydrogen bonds, as well as π-π inter-actions between the chelate ring and the pyridinium ring [centroid-centroid distance = 3.675 (2) Å] link the ions into a three-dimensional network.

Keywords: bis(2,2-bicyanoethene-1,1-dithiolato)nickel(II); crystal structure.; hydrogen bonding; pyridinium; π–π interaction.