Wytrych Patrycja, Utko Józef, Kłak Julia, Ptak Maciej, Stefanski Mariusz, Lis Tadeusz, Ejfler Jolanta, John Łukasz
Faculty of Chemistry, University of Wrocław, 14 F. Joliot-Curie, 50-383 Wrocław, Poland.
Institute of Low Temperature and Structure Research, Polish Academy of Sciences, 2 Okólna, 50-422 Wrocław, Poland.
Molecules. 2021 Dec 27;27(1):147. doi: 10.3390/molecules27010147.
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(OSiPh)(THF)] (), and sodium [Na(OSiPh)] () species, which were later used in obtaining novel gadolinium [Gd(OSiPh)(THF)]·THF (), and erbium [Er(OSiPh)(THF)]·THF () configuration, it can result in res were determined for all - compounds, and in addition, IR, Raman, absorption spectroscopy studies were conducted for and lanthanide compounds. Furthermore, direct current (dc) variable-temperature magnetic susceptibility measurements on polycrystalline samples of and were carried out in the temperature range 1.8-300 K. The shows behavior characteristics for the paramagnetism of the Gd ion. In contrast, the magnetic properties of are dominated by the crystal field effect on the Er ion, masking the magnetic interaction between magnetic centers of neighboring molecules.
在碱金属和镧系元素配位化学中，三苯基硅氧化物似乎是未得到充分重视的配体。这令人惊讶，因为这些取代基在稳定镧系离子的稀有氧化态、参与稳定金属 - 氧核心的分子内和分子间相互作用等方面起着关键作用。本文报道了新型锂[Li(OSiPh)(THF)]（）和钠[Na(OSiPh)]（）物种的合成与表征，随后利用它们获得了新型钆[Gd(OSiPh)(THF)]·THF（）和铒[Er(OSiPh)(THF)]·THF（）构型，测定了所有化合物的结构，此外，还对和镧系化合物进行了红外、拉曼、吸收光谱研究。此外，在1.8 - 300 K温度范围内对和的多晶样品进行了直流（dc）变温磁化率测量。显示出钆离子顺磁性的行为特征。相比之下，的磁性主要受晶体场对铒离子的影响，掩盖了相邻分子磁中心之间的磁相互作用。
