Syntheses and Structures of One- and Two-Dimensional Organic−Inorganic Hybrid Rare Earth Derivatives Based on Monovacant Keggin-Type Polyoxotungstates

Autor:	Jingyang Niu, Junwei Zhao, Xian-Ying Duan, Jing-Ping Wang
Rok vydání:	2006
Předmět:	Formamide Aqueous solution Stereochemistry Infrared spectroscopy General Chemistry Crystal structure Condensed Matter Physics Magnetic susceptibility Thermogravimetry chemistry.chemical_compound Crystallography chemistry Differential thermal analysis General Materials Science Hybrid material
Zdroj:	Crystal Growth & Design. 6:507-513
ISSN:	1528-7505 1528-7483
DOI:	10.1021/cg050433j
Popis:	Three novel organic−inorganic hybrid monovacant Keggin-type silicotungstates and germanotungstates containing lanthanideIII cations with 1D and 2D infinitely extended structures, [Sm(H2O)6]0.25[Sm(H2O)5]0.25H0.5{Sm(H2O)7[Sm(H2O)2(DMSO)(α-SiW11O39)]}·4.5H2O (DMSO = dimethyl sulfoxide) (1), [Dy(H2O)4]0.25[Dy(H2O)6]0.25H0.5{Dy(H2O)7[Dy(H2O)2(DMSO)(α-GeW11O39)]}·5.25H2O (2), and H{[Sm(H2O)5.5(DMF)0.5]2[Sm(H2O)2(DMF)][Sm(H2O)3(α-SiW11O39)]2} (DMF = N,N-dimethyl formamide) (3), have been synthesized in aqueous solution under moderate conditions and further characterized by elemental analyses, inductively coupled plasma (ICP) analyses, IR, UV spectra, and X-ray diffraction. Compounds 1 and 2 reveal the one-dimensional chain infinitely extended structure, while compound 3 represents the first example of a two-dimensional network structure formed by the monovacant Keggin-type [α-SiW11O39]8- chain through the linkage of rare earth metal−organic coordination cations. From thermogravimetric (TG/DTA) analyses, the pol...
Databáze:	OpenAIRE
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