Acta Cryst. (2007). E63, m2904  [ doi:10.1107/S160053680705430X ]

Bis[1-(3-cyanobenzyl)triphenylphosphonium] bis(1,2-dicyanoethene-1,2-dithiolato-²S,S')nickelate(II)

C. Ni, J. Zhou and Y. Hou

Abstract: The title complex, (C₂₆H₂₁NP)₂[Ni(C₄N₂S₂)₂], is a salt of the mCNBzTPP⁺cation and the [Ni(mnt)₂]^2- anion [mCNBzTPP⁺ is the 1-(3-cyanobenzyltriphenylphosphonium) cation and mnt^2- is the maleonitriledithiolate anion] and was prepared by the direct reaction of NiCl₂, Na₂mnt and (mCNBzTPP)⁺·Br^- in ethanol. The asymmetric unit consists of two unique mCNBzTPP⁺cations and half each of two [Ni(mnt)₂]^2- anions with each Ni atom lying on an inversion centre. The Ni^II ions adopt a square-planar coordination geometry, binding to the S atoms of two mnt^2- ligands. Both [mCNBzTPP]⁺ cations adopt conformations in which their four aromatic rings are twisted with respect to the planes that include the P atoms and the two C atoms linking them to the 3-cyanobenzyl rings. Three weak C-HN hydrogen bonds play an important role in stabilizing the crystal structure.

Online 7 November 2007

Copyright © International Union of Crystallography
IUCr Webmaster