Reinvestigation of Reactions of HgPh2 with Eu and Yb Metal and the Synthesis of a Europium(II) Bis(tetraphenylborate)

Autor:	Michal Wiecko, Zhifang Guo, Glen B. Deacon, Peter C. Junk
Jazyk:	angličtina
Rok vydání:	2022
Předmět:	europium ytterbium lanthanoid organyls tetraphenylborate anion mercury organyls Organic chemistry QD241-441
Zdroj:	Molecules, Vol 27, Iss 21, p 7547 (2022)
Druh dokumentu:	article
ISSN:	1420-3049
DOI:	10.3390/molecules27217547
Popis:	Europium bis(tetraphenylborate) [Eu(thf)7][BPh4]2⋅thf containing a fully solvated [Eu(thf)7]2+ cation, was synthesized by protolysis of “EuPh2” (from Eu and HgPh2) with Et3NHBPh4, and the structure was determined by single-crystal X-ray diffraction. Efforts to characterize the putative “Ph2Ln” (Ln = Eu, Yb) reagents led to the synthesis of a mixed-valence complex, [(thf)3YbII(μ-Ph)3YbIII(Ph)2(thf)]⋅2thf, resulting from the reaction of Yb metal with HgPh2 at a low temperature. This mixed-valence YbII/YbIII compound was studied by 171Yb-NMR spectroscopy and single-crystal X-ray diffraction, and the oxidation states of the Yb atoms were assigned.
Databáze:	Directory of Open Access Journals
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