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Acta Cryst. (2006). E62, m721-m723 [ doi:10.1107/S1600536806005770 ]
![[mu]](/logos/entities/mu_rmgif.gif)
2-cyano-![[kappa]](/logos/entities/kappa_rmgif.gif)
8C:N-2-2,6-dimethylpyrazine-2N:N'-hexakis(2,6-dimethylpyrazine-N)octa-2-thiocyanato-16N:S-decacopper(I,II)Abstract: The asymmetric unit of the title compound [Cu8ICu2II(CN)4(NCS)8(C6H8N2)7], consists of six crystallographically independent Cu atoms, four thiocyanate anions and two cyanide anions, as well as four 2,6-dimethylpyrazine ligands. Two of the six Cu atoms and one of the four 2,6-dimethylpyrazine ligands are located on centres of inversion. The ligand on a special position is therefore disordered due to symmetry. Altogether there are two copper(II) and eight copper(I) cations in the formula unit. The copper(II) cations are each coordinated by four N atoms within a slightly distorted square-planar coordination. The copper(I) cations, on the other hand, are coordinated by four ligands or anions within distorted tetrahedra. From this arrangement, a three-dimensional coordination network is formed.
Online 10 March 2006
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