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
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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 [Li
4(OSiPh
3)
4(THF)
2] (
1), and sodium [Na
4(OSiPh
3)
4] (
2) species, which were later used in obtaining novel gadolinium [Gd(OSiPh
3)
3(THF)
3]·THF (
3), and erbium [Er(OSiPh
3)
3(THF)
3]·THF (
4) configuration, it can result in res 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 Gd
3+ ion. In contrast, the magnetic properties of
4 are dominated by the crystal field effect on the Er
3+ ion, masking the magnetic interaction between magnetic centers of neighboring molecules.
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