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  • Title: Heterometallic Ln/Hg compounds with fluorinated thiolate ligands.
    Author: Banerjee S, Emge TJ, Brennan JG.
    Journal: Inorg Chem; 2004 Oct 04; 43(20):6307-12. PubMed ID: 15446877.
    Abstract:
    The early lanthanide benzenefluorothiolates (Ln(SC(6)F(5))(3); Ln = La, Ce, Pr, Nd, Sm, Gd) react with Hg(SC(6)F(5))(2) in DME to form ionic heterometallic compounds with Ln cations and Hg anions. X-ray diffraction analyses of all compounds reveal an isostructural series with the general formula [(DME)(3)Ln(SC(6)F(5))(2)](2)[Hg(2)(SC(6)F(5))(6)]. In the structures, a fluorothiolate ligand has been extracted from the Ln coordination sphere that is saturated with three neutral DME donor ligands and a dative interaction between one ortho fluorine and the Ln. Distances between Ln and F do not vary simply with Ln ionic radius. There are two Ln cations with charge balanced by a Hg(2)(SC(6)F(5))(6) dianion composed of two distinctly nonideal Hg(II) tetrahedra, all connected through a series of pi-pi interactions that link cations with anions in a one-dimensional array and anions to anions in a more complex 2D network.
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