Acta Cryst. (2006). E62, m483-m485  [ doi:10.1107/S1600536806004478 ]

Bis[(4-bromobenzyl)triphenylphosphonium] bis(1,2-dicyanoethane-1,2-dithiolato-²S,S')nickel(II) monohydrate

S.-B. Yang and C.-L. Ni

Abstract: The synthesis and crystal structure of the title complex, (C₂₅H₂₁BrP)₂[Ni(C₄N₂S₂)₂]·H₂O or [BrBzTPP]₂[Ni(mnt)₂]·H₂O [where BrBzTPP is (4-bromobenzyl)triphenylphosphonium and mnt is 1,2-dicyanoethane-1,2-dithiolate or maleonitriledithiolate], is reported. The Ni^II ion of the [Ni(mnt)₂]^2- anion is coordinated by four S atoms of two mnt ligands and exhibits the expected square-planar coordination geometry. The [BrBzTPP]⁺ cation adopts a conformation where the four benzene rings are twisted with respect to the plane of the P-C-C chain which links them. The Ni atom lies on a centre of symmetry. Weak C-HNi and C-HS interactions between the anions and cations may play a role in the packing and stabilization of the crystal structure.

Online 10 February 2006

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