Mono- and Di-Lanthanide Derivatives of 22-Tungsto-2-antimonate(III), [Ln(H2O)4Sb2W21O72(OH)]10- and [Ln2(H2O)8Sb2W20O70)]8

• Published in: Zeitschrift für anorganische und allgemeine Chemie (1950) Vol. 639; no. 14; pp. 2510 - 2515
• Main Authors: Ismail, Amal H., Bassil, Bassem S., Römer, Isabella, Kortz, Ulrich
• Format: Journal Article
• Language: English
• Published: Weinheim WILEY-VCH Verlag 01.11.2013; WILEY‐VCH Verlag; Wiley Subscription Services, Inc
• Subjects: Antimony; Lanthanides; Polyoxometalates; Tungsten; X-ray diffraction
• ISSN: 0044-2313; 1521-3749
• DOI: 10.1002/zaac.201300530

. The mono‐lanthanide‐containing [Ln(H2O)4Sb2W21O72(OH)]10– (Ln = Yb (1), Lu (2)), and the di‐lanthanide‐containing [Ln2(H2O)8Sb2W20O70)]8– (Ln = Yb (3), Lu (4), Y (5)) have been synthesized in aqueous‐acidic media and characterized in the solid state. Polyanions 1 and 2 were prepared by reaction of Ln3+ ions with [Sb2W22O74(OH)2]12– (Sb2W22), whereas 3–5 were prepared by using the trilacunary 9‐tungstoantimonate(III) [B‐α‐SbW9O33]9– (SbW9). Polyanions 1–5 crystallized as sodium salts in the triclinic system, space group P$\bar{1}$. All compounds were characterized in the solid state by FTIR, single‐crystal XRD, TGA, and elemental analysis. Polyanions 1–5 contain the lacunary [Sb2W20O70]14– unit (Sb2W20), which is coordinated to either a lanthanide and a tungsten ion, leading to a structure with Cs symmetry in polyanions 1 and 2, or to two lanthanide ions, leading to a structure with idealized C2h symmetry, in polyanions 3–5.