Acta Cryst. (2008). E64, m174  [ doi:10.1107/S1600536807065622 ]

catena-Poly[[nickel(II)-₃-1,1-dicyanoethene-2,2-dithiolato-⁴S,S':N:N'-bis[(15-crown-5)magnesium(II)]-₃-1,1-dicyanoethene-2,2-dithiolato-⁴N:N':S,S'] dichloride]

J. Yang, C. Li, D. Li and D. Wang

Abstract: The reaction of MgCl₂, NiCl₂, and Na₂(i-mnt) (i-mnt is 1,1-dicyanothene-2,2-dithiolate) with 15-crown-5 (15-C-5) leads to an infinite chain polymer, {[NiMg₂(C₄N₂S₂)₂(C₁₀H₂₀O₅)₂]Cl₂}_n or {[Mg(15-C-5)]₂[Ni(i-mnt)₂]Cl₂}_n, which consists of two [Mg(15-C-5)]²⁺ complex cations, one [Ni(i-mnt)₂]^2- complex anion and two Cl^- ions per formula unit. In the [Ni(i-mnt)₂]^2- complex anion, Ni²⁺ is located on a crystallographic mirror plane with a slightly distorted square-planar coordination by four S atoms. In the [Mg(15-C-5)]²⁺ complex cations, the Mg and one O atom of the crown lie on mirror planes and the Mg atoms are in sevenfold coordination environments of five O atoms from the crown and two N atoms from two i-mnt anions. The bridging of the two complexes via the Mg-N bonds leads to the formation of one-dimensional chains along the a axis.

Online 12 December 2007

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