Summary
The structure of [S(CH2CH2)3S]2[Re2O3(CN)8]·4H2O has been determined from three-dimensional x-ray diffraction data. The blue crystals are monoclinic, space group P21/c, with cell dimensionsa=9.431(2),b=10.879(2),c=16.217(3)Å, β=110.84(2)°,Z=2 andD m=2.11 gcm−3. Anisotropic refinement by least-squares methods of 2483 observed reflections converged toR=0.050.
The centrosymmetric binuclear anion has a linear O=Re−O−Re=O grouping with an eclipsed configuration for the cyano ligands. Bond distances: Re−O (terminal)=1.69(1), Re−O (bridging)=1.921(1) and Re−Cav=2.12(2)Å. Each Re atom is displaced by 0.11(2)Å towards the terminal oxygen atom giving a slight square-pyramidal distortion of the octahedral environment. The ring-constrained cation has C−Sav=1.82(2)Å with averaged bond angles C−S−C=101(1) and S−C−C=113(1)°.
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Basson, S.S., Leipoldt, J.G., Roodt, A. et al. The crystal structure of bis(1,4-dithioniumdicyclo-[2,2,2]-octane) μ-oxo-bis[tetracyanooxorhenate(V)]tetrahydrate. Transition Met Chem 12, 82–84 (1987). https://doi.org/10.1007/BF01023140
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DOI: https://doi.org/10.1007/BF01023140