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

Michal Wiecko; Zhifang Guo; Glen B. Deacon; Peter C. Junk

doi:10.3390/molecules27217547

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

Michal Wiecko
, Zhifang Guo
, Glen B. Deacon
, Peter C. Junk

School of Chemistry

Research output: Contribution to journal › Article › Research › peer-review

2 Citations (Scopus)

Abstract

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)₃Yb^II(μ-Ph)₃Yb^III(Ph)₂(thf)]⋅2thf, resulting from the reaction of Yb metal with HgPh₂ at a low temperature. This mixed-valence Yb^II/Yb^III compound was studied by ¹⁷¹Yb-NMR spectroscopy and single-crystal X-ray diffraction, and the oxidation states of the Yb atoms were assigned.

Original language	English
Article number	7547
Number of pages	10
Journal	Molecules
Volume	27
Issue number	21
DOIs	https://doi.org/10.3390/molecules27217547
Publication status	Published - 3 Nov 2022

Keywords

europium
lanthanoid organyls
mercury organyls
tetraphenylborate anion
ytterbium

Access to Document

10.3390/molecules27217547Licence: CC BY

Cite this

@article{45440898aed242ea9abd5308d50f1c4a,

title = "Reinvestigation of Reactions of HgPh2 with Eu and Yb Metal and the Synthesis of a Europium(II) Bis(tetraphenylborate) †",

abstract = "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.",

keywords = "europium, lanthanoid organyls, mercury organyls, tetraphenylborate anion, ytterbium",

author = "Michal Wiecko and Zhifang Guo and Deacon, \{Glen B.\} and Junk, \{Peter C.\}",

note = "Funding Information: G.B.D. and P.C.J. gratefully acknowledge ARC for funding (DP190100798). M.W. thanks Deutsche Forschungs-gemeinschaft (DFG) for a research fellowship. Publisher Copyright: {\textcopyright} 2022 by the authors.",

year = "2022",

month = nov,

day = "3",

doi = "10.3390/molecules27217547",

language = "English",

volume = "27",

journal = "Molecules",

issn = "1420-3049",

publisher = "MDPI AG",

number = "21",

}

TY - JOUR

T1 - Reinvestigation of Reactions of HgPh2 with Eu and Yb Metal and the Synthesis of a Europium(II) Bis(tetraphenylborate) †

AU - Wiecko, Michal

AU - Guo, Zhifang

AU - Deacon, Glen B.

AU - Junk, Peter C.

N1 - Funding Information: G.B.D. and P.C.J. gratefully acknowledge ARC for funding (DP190100798). M.W. thanks Deutsche Forschungs-gemeinschaft (DFG) for a research fellowship. Publisher Copyright: © 2022 by the authors.

PY - 2022/11/3

Y1 - 2022/11/3

N2 - 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.

AB - 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.

KW - europium

KW - lanthanoid organyls

KW - mercury organyls

KW - tetraphenylborate anion

KW - ytterbium

UR - https://www.scopus.com/pages/publications/85141650563

U2 - 10.3390/molecules27217547

DO - 10.3390/molecules27217547

M3 - Article

C2 - 36364375

AN - SCOPUS:85141650563

SN - 1420-3049

VL - 27

JO - Molecules

JF - Molecules

IS - 21

M1 - 7547

ER -

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

Abstract

Keywords

Access to Document

Other files and links

CTREC: Challenging targets in rare earth metal-organic chemistry

Cite this

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

Abstract

Keywords

Access to Document

Other files and links

Projects

CTREC: Challenging targets in rare earth metal-organic chemistry

Cite this

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