Synthese und Kristallstrukturen der Polyselenidokomplexe (PPh4)6[M(Se4)2]2[WSe4] · DMF mit M = Zink und Quecksilber |
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| Authors: | Bernhard Neumü ller,My-Linh Ha-Eierdanz,Ulrich Mü ller,Sylvia Magull,Gertrud Kr uter,Kurt Dehnicke |
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| Affiliation: | Bernhard Neumüller,My-Linh Ha-Eierdanz,Ulrich Müller,Sylvia Magull,Gertrud Kräuter,Kurt Dehnicke |
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| Abstract: | Syntheses and Crystal Structures of the Polyselenido Complexes (PPh4)6[M(Se4)2]2[WSe4] · DMF with M = Zinc and Mercury The title compounds have been prepared by the reactions of the acetates of zinc and mercury, respectively, with excess (PPh4)2 WSe4 in boiling dimethylformamide, forming black-red single crystals. According to the X-ray structure determinations both compounds crystallize isotypically in the space group 12/a with four formula units per unit cell. (PPh4)6[Zn(Se4)2]2[WSe4] · DMF: a = 2888.1(6), b = 1740.3(2), c = 2893.9(4) pm, β = 90.47(1)°. 3230 observed unique reflections, R = 0.009. (PPh4)6[Hg(Se4)2]2[WSe4] · DMF: a = 2891.8(5), b = 1738.0(4), c = 2920.1(5) pm, β = 90.29(2)°. 2978 observed unique reflections, R = 0.115%. The compounds consist of PPh4+ ions, spirocyclic octaseleno metallates [M(Se4)2]2?, tetrahedral WSe42-ions, and disordered DMF Molecules. |
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| Keywords: | Mixed polyselenido complexes of zinc/tungsten, Mercury/tungsten crystal structures FIR spectra |
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