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Inne
Two supramolecular inorganic-organic hybrids of 12-silicotungstic acid heteropolyoxometalate and trinuclear lanthanide clusters: syntheses, structures, and magnetic properties.
Autorzy
Rok wydania
2014
Czasopismo
European Journal of Inorganic Chemistry
Strony
5908-5915
DOI
10.1002/ejic.201402711
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
Hydrothermal synthesis of two novel inorganic–organic hybrid assemblies, {Na[Ln(pydc-OH)(H2O)4]3}[SiW12O40]·15H2O [Ln = Nd (1) and Ln = Sm, (2); pydc-OH = 4-hydroxypyridine-2,6-dicarboxy], and their characterization is described. Structural characterizations by single-crystal X-ray diffraction reveal that these compounds are isostructural, and each consists of [SiW12O40]4–Keggin-type polyoxometalates (POMs) linked by three lanthanide ions to yield discrete trinuclear lanthanide clusters. These discrete molecules are further packed into 3D supramolecular assemblies by means of hydrogen-bonding and anion–π interactions. Both compounds exhibit remarkable thermal stability. The temperature variation in the magnetic susceptibility χm and of the χmT product and Bohr magnetons of the NdIII (1)- and SmIII (2)-based compounds are considered. The magnetic data have been interpreted relative to data presented in the literature.
Słowa kluczowe
Supramolecular chemistry, Polyoxometalates, Hydrothermal synthesis, lanthanides, magnetic properties
Adres publiczny
http://dx.doi.org/10.1002/ejic.201402711
Strona internetowa wydawcy
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