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Synthesis, crystal structures, and spectroscopic properties of novel gadolinium and erbium triphenylsiloxide coordination entities.
Autorzy
Rok wydania
2022
Czasopismo
Numer woluminu
27
Strony
147/1-147/16
DOI
10.3390/molecules27010147
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
In alkali metal and lanthanide coordination chemistry, triphenylsiloxides seem to be unduly
underappreciated ligands. This is as surprising as that such substituents play a crucial role, among
others, in stabilizing rare oxidation states of lanthanide ions, taking a part of intramolecular and
molecular interactions stabilizing metal-oxygen cores and many others. This paper reports the
synthesis and characterization of new lithium [Li4(OSiPh3)4(THF)2] (1), and sodium [Na4(OSiPh3)4]
(2) species, which were later used in obtaining novel gadolinium [Gd(OSiPh3)3(THF)3]THF (3), and
erbium [Er(OSiPh3)3(THF)3]THF (4) triphenylsiloxides. Crystal structures were determined for all
1–4 compounds, and in addition, IR, Raman, absorption spectroscopy studies were conducted for
3 and 4 lanthanide compounds. Furthermore, direct current (dc) variable-temperature magnetic
susceptibility measurements on polycrystalline samples of 3 and 4 were carried out in the temperature
range 1.8–300 K. The 3 shows behavior characteristics for the paramagnetism of the Gd3+ ion. In
contrast, the magnetic properties of 4 are dominated by the crystal field effect on the Er3+ ion, masking
the magnetic interaction between magnetic centers of neighboring molecules.
Słowa kluczowe
lanthanide coordination chemistry, triphenylsilanol, triphenylsiloxide, gadolinium triphenylsiloxide, erbium triphenylsiloxide, X-ray crystallography, IR spectroscopy, Raman spectroscopy, absorption spectroscopy, magnetism
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Pełny tekst licencji: https://creativecommons.org/licenses/by/3.0/pl/legalcode
Adres publiczny
http://dx.doi.org/10.3390/molecules27010147
Strona internetowa wydawcy
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