Sandwich-type polyoxometalates of the later lanthanide ions. Syntheses and structures of [(A-XW9O34)2(H2OM)3CO3]11− (X = P5+, As5+) (M = Tb3+, Dy3+, Er3+)

Six new complexes were synthesized in a 0.1 M aqueous carbonate solution and characterized by elemental analyses, thermogravimetric analyses, infrared spectroscopy and X-ray single crystal structure analyses. The single-crystal structure analysis was on K 11 [(A-AsW 9 O 34 ) 2 (H 2 ODy) 3 CO 3 ]·22H...

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Bibliographic Details
Published in:Journal of coordination chemistry 2013-04, Vol.66 (8), p.1374-1383
Main Authors: Khoshnavazi, Roushan, Nicolò, Francesco, Amiri Rudbari, Hadi, Naseri, Elham, Aminipour, Ahmad
Format: Article
Language:English
Subjects:
Later lanthanide ions
Polyoxometalate
Sandwich-type complex
Single crystal structure analysis
Tridentate carbonate ligand
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Summary:Six new complexes were synthesized in a 0.1 M aqueous carbonate solution and characterized by elemental analyses, thermogravimetric analyses, infrared spectroscopy and X-ray single crystal structure analyses. The single-crystal structure analysis was on K 11 [(A-AsW 9 O 34 ) 2 (H 2 ODy) 3 CO 3 ]·22H 2 O. The results revealed that the complexes are isomorphic and their structures consist of two lacunary [A-XW 9 O 34 ] 9− Keggin moieties linked by a (OMOH 2 ) 3 C belt, forming an A-type sandwich structure. The is tridentate and fixes three M 3+ centers together by its oxygens. Each M 3+ cation is mono-capped trigonal-prismatic coordination, achieved by two terminal oxygens of an edge-shared pair of WO 6 octahedra to each [A-XW 9 O 34 ] 9− and two oxygens from the belt, and the cap by one water.
ISSN:0095-8972
1029-0389
DOI:10.1080/00958972.2013.782006