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Rubidium ytterbium(III) tetrakis(polyphosphate), RbYb(PO3)4, was synthesized by solid-state reaction. It adopts structure type IV of the MRE(PO3)4 (M = alkali metal and RE = rare earth metal) family of compounds. The structure is composed of a three-dimensional framework made up from double spiral polyphosphate chains parallel to [10-1] and irregular [YbO8] polyhedra. There are eight PO4 tetrahedra in the repeat unit of the polyphosphate chains. The Rb+ cation is located in channels extending along [100] that are delimited by the three-dimensional framework. It is surrounded by 11 O atoms, defining an irregular polyhedron.
metal-organic compoundsOpen access
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In the molecule of the the title compound, [Fe(C5H5)(C28H22F6N2PS)], the absolute configuration is RC,SFe. The dihedral angle between the trifluoromethyl-substituted phenyl ring and the thiourea plane is 41.8 (9)°. The iron atom is bound to the cyclopentadienyl rings in the typical η5-manner in a close to eclipsed conformation. The crystal structure features N—H
S hydrogen bonds, with the S atom as an acceptor for both N—H groups, forming a layered arrangement parallel to (1-10). The two –CF3 groups are each disordered over two positions with refined occupancy rates for the major components of 0.66 (7) and 0.55 (5). The crystal was grown from mixed solvents (n-hexane and ethyl acetate). These solvents are disordered in the crystal and the resulting electron density was found to be uninterpretable. The solvent contribution to the structure factors was taken into account by back-Fourier transformation of all density found in the disordered solvent area using the SQUEEZE routine in PLATON [Spek (2009). Acta Cryst. D65, 148–155]. The formula mass and density do not take account of the solvent.
S hydrogen bonds, with the S atom as an acceptor for both N—H groups, forming a layered arrangement parallel to (1-10). The two –CF3 groups are each disordered over two positions with refined occupancy rates for the major components of 0.66 (7) and 0.55 (5). The crystal was grown from mixed solvents (n-hexane and ethyl acetate). These solvents are disordered in the crystal and the resulting electron density was found to be uninterpretable. The solvent contribution to the structure factors was taken into account by back-Fourier transformation of all density found in the disordered solvent area using the SQUEEZE routine in PLATON [Spek (2009). Acta Cryst. D65, 148–155]. The formula mass and density do not take account of the solvent.
