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Mono‐ and Di‐Lanthanide Derivatives of 22‐Tungsto‐2‐antimonate(III), [ Ln (H 2 O) 4 Sb 2 W 21 O 72 (OH)] 10– and [ Ln 2 (H 2 O) 8 Sb 2 W 20 O 70 )] 8–
Author(s) -
Ismail Amal H.,
Bassil Bassem S.,
Römer Isabella,
Kortz Ulrich
Publication year - 2013
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.201300530
Subject(s) - lanthanide , antimonate , lacunary function , triclinic crystal system , chemistry , crystallography , antimony , ion , polyoxometalate , tantalate , crystal structure , nuclear chemistry , inorganic chemistry , materials science , pure mathematics , catalysis , optoelectronics , dielectric , ferroelectricity , biochemistry , mathematics , organic chemistry
Abstract. The mono‐lanthanide‐containing [ Ln (H 2 O) 4 Sb 2 W 21 O 72 (OH)] 10– ( Ln = Yb ( 1 ), Lu ( 2 )), and the di‐lanthanide‐containing [ Ln 2 (H 2 O) 8 Sb 2 W 20 O 70 )] 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 Ln 3+ ions with [Sb 2 W 22 O 74 (OH) 2 ] 12– ( Sb 2 W 22 ), whereas 3 – 5 were prepared by using the trilacunary 9‐tungstoantimonate(III) [ B‐α‐ SbW 9 O 33 ] 9– ( SbW 9 ). 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 [Sb 2 W 20 O 70 ] 14– unit ( Sb 2 W 20 ), which is coordinated to either a lanthanide and a tungsten ion, leading to a structure with C s symmetry in polyanions 1 and 2 , or to two lanthanide ions, leading to a structure with idealized C 2 h symmetry, in polyanions 3 – 5 .