Badania heteropolianionów skondensowanych i ich kompleksów z jonami lantanowców (III) metodami spektroskopowymi

Lis, S.; But, S.

Artykuł - szczegóły

Tytuł artykułu

Badania heteropolianionów skondensowanych i ich kompleksów z jonami lantanowców (III) metodami spektroskopowymi

Autorzy

Lis S. , But S.

Wybrane pełne teksty z tego czasopisma

Identyfikatory

Warianty tytułu

Spectroscopic studies of heteropolyanions and their complexes with lanthanide (III) ions

Języki publikacji

Abstrakty

Polyoxometalates (POM) form a unique class of compounds of special properties with wide applications. Chemistry of POM is an important subarea of modern inorganic chemistry. In continuation of our earlier work, published in this journal, we present here studies on spectroscopic characterisation of POMs and their lanthanide(III) complexes (Ln/POM). A nomenclature system including trivial and systematic names, reflecting information on composition and structure of POM is shortly described. Methods of synthesis of polyanions having inorganic and organic counter cations and results of studies related to POM structure and their Ln(III) complexes are briefly reviewed. Useful techniques for the verification of POMs and Ln/POM compositions and determination of components, including elemental and thermogravimetric analysis, IR and Raman spectroscopy as well as the new spectrophotometric methods for determination of tungsten and molybdenum and for simultaneous determination of these elements in structures of POMs and their Ln/POM complexes are presented. An important role of the FTIR spectra in characterisation of POMs and LnPOM complexes is shown. Forms of POM complexes such as: sandwiched Ln(POM)2, encapsulated within the cavity of the POM and Ln2POM were studied with the use of absorption spectra (in the Nd(III) hypersensitive band and Eu(III) luminescence spectroscopy . Luminescence (excitation and emission) spectra and luminescence lifetime measurements, recorded for Eu(III) complexes in solid and aqueous solutions at room temperature, and luminescence quantum yield of Eu(III) ion, were used for characterisation of the species. Influence of ionic strength on the complex formation in solution is also presented. The use of EPR method to study magnetic properties and symmetry of the Gd/POM complexes is discussed. Studies shown that Gd(III) ion can be useful as a probe to study of a local environment of the host metal site in terms of symmetry and coordination in Gd/POM.

Słowa kluczowe

heteropolianiony skondensowane synteza HPAS kompleksy z jonami lantanowców spektroskopia EPR

heteropolyanions spectrophotometry

Wydawca

Polskie Towarzystwo Chemiczne

Czasopismo

Wiadomości Chemiczne

Rocznik

2001

Tom

[Z] 55, 11-12

Strony

1029--1046

Opis fizyczny

tab., wykr., bibliogr. 52 poz.

Twórcy

autor

Lis S.

Wydział Chemii Uniwersytetu im. A. Mickiewicza ul. Grunwaldzka 6, 60-780 Poznań

autor

But S.

Wydział Chemii Uniwersytetu im. A. Mickiewicza ul. Grunwaldzka 6, 60-780 Poznań

Wydział Chemii Uniwersytetu im. A.Mickiewicza, ul. Grunwaldzka 6, 60-780 Poznań

Bibliografia

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Uwagi

Opracowane ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).

Typ dokumentu

Bibliografia

Identyfikator YADDA

bwmeta1.element.baztech-article-BUS1-0010-0045