Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Synthesis and photophysical properties of rare earth complexes bearing silanediamido ligands Me2Si(NAryl)(2)(2-) (Aryl = Dipp, Mes). / Mironova, Olga A.; Lashchenko, Daniil; Ryadun, Aleksey A. и др.
в: New Journal of Chemistry, Том 46, № 5, 07.02.2022, стр. 2351-2359.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Synthesis and photophysical properties of rare earth complexes bearing silanediamido ligands Me2Si(NAryl)(2)(2-) (Aryl = Dipp, Mes)
AU - Mironova, Olga A.
AU - Lashchenko, Daniil
AU - Ryadun, Aleksey A.
AU - Sukhikh, Taisiya S.
AU - Bashirov, Denis A.
AU - Pushkarevsky, Nikolay A.
AU - Konchenko, Sergey N.
N1 - Funding Information: This work was supported by the Russian Science Foundation (project No. 21-13-00287). The XRD and the luminescence studies were carried out with the support from the Ministry of Science and Higher Education of the Russian Federation (No. 121031700313-8 and No. 121031700321-3). Publisher Copyright: © 2022 The Royal Society of Chemistry and the Centre National de la Recherche Scientifique.
PY - 2022/2/7
Y1 - 2022/2/7
N2 - A series of rare earth (RE) chloride complexes bearing silanediamido ligands (LAryl)2- = Me2Si(NAryl)22- with bulky substituents, Aryl = mesityl (Mes), and 2,6-diisopropylphenyl (Dipp) was synthesized by salt metathesis reactions. Binuclear species [{RE(LAryl)(thf)2}2(μ-Cl)2] (REAryl; RE = Y, Gd, Tb, Sm, Aryl = Dipp; RE = Y, Gd, Tb, Aryl = Mes) crystallize from non-polar solvents. Deprotonation reactions of proligands H2LAryl by KH and n-BuLi are compared, and the advantages of both approaches are discussed. Formation of ate complexes [{RE(LAryl)(thf)(μ-Cl)2Li(thf)3}2(μ-Cl)2] (RE = Y, Tb) was detected when using n-BuLi. Recrystallization of YDipp from pure thf led to the monomerization to the [Y(LDipp)Cl(thf)3] complex. Energies of the triplet states were determined for both ligands from the photoluminescence (PL) spectra of Gd complexes. The PL of Tb complexes in the solid state and in a solution was studied, showing substantial sensitization by the (LAryl)2- ligands.
AB - A series of rare earth (RE) chloride complexes bearing silanediamido ligands (LAryl)2- = Me2Si(NAryl)22- with bulky substituents, Aryl = mesityl (Mes), and 2,6-diisopropylphenyl (Dipp) was synthesized by salt metathesis reactions. Binuclear species [{RE(LAryl)(thf)2}2(μ-Cl)2] (REAryl; RE = Y, Gd, Tb, Sm, Aryl = Dipp; RE = Y, Gd, Tb, Aryl = Mes) crystallize from non-polar solvents. Deprotonation reactions of proligands H2LAryl by KH and n-BuLi are compared, and the advantages of both approaches are discussed. Formation of ate complexes [{RE(LAryl)(thf)(μ-Cl)2Li(thf)3}2(μ-Cl)2] (RE = Y, Tb) was detected when using n-BuLi. Recrystallization of YDipp from pure thf led to the monomerization to the [Y(LDipp)Cl(thf)3] complex. Energies of the triplet states were determined for both ligands from the photoluminescence (PL) spectra of Gd complexes. The PL of Tb complexes in the solid state and in a solution was studied, showing substantial sensitization by the (LAryl)2- ligands.
KW - METAL ALKYL COMPLEXES
KW - X-RAY-DIFFRACTION
KW - STRUCTURAL-CHARACTERIZATION
KW - ISOPRENE POLYMERIZATION
KW - SANDWICH COMPLEXES
KW - PRECURSORS
KW - DERIVATIVES
KW - REDUCTION
KW - CHEMISTRY
KW - CATALYSIS
UR - http://www.scopus.com/inward/record.url?scp=85124178933&partnerID=8YFLogxK
U2 - 10.1039/d1nj05722g
DO - 10.1039/d1nj05722g
M3 - Article
VL - 46
SP - 2351
EP - 2359
JO - New Journal of Chemistry
JF - New Journal of Chemistry
SN - 1144-0546
IS - 5
ER -
ID: 35410939