Tridentate Nitrogen Ligand as a Tool for the Construction of Well-Defined Rare Earth Trichloride Complexes

Tridentate Nitrogen Ligand as a Tool for the Construction of Well-Defined Rare Earth Trichloride Complexes Full article

Journal

Inorganic Chemistry
ISSN: 0020-1669 , E-ISSN: 1520-510X

Output data

Year: 2024, Volume: 63, Number: 4, Pages: 1867-1878 Pages count : 12 DOI: 10.1021/acs.inorgchem.3c03492

Authors

Degtyareva Svetlana S. ^1,2 , Bardonov Daniil A. ^1,2 , Afanaseva Anna V. ^1,2 , Puntus Lada N. ^1,3 , Lyssenko Konstantin A. ⁴ , Birin Kirill P. ⁵ , Minyaev Mikhail E. ^1,6 , Burykina Julia V. ⁶ , Taydakov Ilya V. ^1,7 , Varaksina Evgenia A. ^1,7 , Nifant’ev Ilya E. ^1,4 , Roitershtein Dmitrii M. ^1,6,2

Affiliations

1	A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 119991 Moscow, Russian Federation
2	National Research University Higher School of Economics (HSE University), 101000 Moscow, Russian Federation
3	V.A. Kotel’nikov Institute of Radioengineering and Electronics, Russian Academy of Sciences, Fryazino, 141190 Moscow, Russian Federation
4	Department of Chemistry, M.V. Lomonosov Moscow State University, 119991 Moscow, Russian Federation
5	A.N. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, 119071 Moscow, Russian Federation
6	N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russian Federation
7	P.N. Lebedev Physical Institute, Russian Academy of Sciences, 119991 Moscow, Russian Federation

LnCl3(THF)3 (Ln = Y, La ÷ Nd, Sm ÷ Lu) readily react with the tridentate 1,3,5-trimethyl-1,3,5-triazacyclohexane (Me3tach) ligand to form mono- or binuclear lanthanide trichloride complexes, depending on the stoichiometry of the reaction and the ionic radius of the metal: mononuclear pseudosandwich [LnCl3(Me3tach)2], (Ln = Y, La ÷ Ho) or binuclear complexes [Ln2Cl6(Me3tach)3], or [LnCl3(Me3tach)(THF)]2 (Ln = Sm, Tb). Detailed analysis of the NMR data of [LnCl3(Me3tach)2] complexes with paramagnetic lanthanide ions showed that their structures remained unchanged in the toluene solution. A series of isomorphous complexes [LnCl3(Me3tach)(Py)2] (Ln = La, Sm, Tb, Er, Lu; Py = pyridine) have been obtained by the recrystallization of either mononuclear or binuclear complexes from pyridine. Complexes of terbium and europium ions with the Me3tach ligand exhibit relatively high quantum yields of metal-centered luminescence (0.39 and 0.32, respectively).

Degtyareva S.S. , Bardonov D.A. , Afanaseva A.V. , Puntus L.N. , Lyssenko K.A. , Birin K.P. , Minyaev M.E. , Burykina J.V. , Taydakov I.V. , Varaksina E.A. , Nifant’ev I.E. , Roitershtein D.M.
Tridentate Nitrogen Ligand as a Tool for the Construction of Well-Defined Rare Earth Trichloride Complexes
Inorganic Chemistry. 2024. V.63. N4. P.1867-1878. DOI: 10.1021/acs.inorgchem.3c03492 WOS Scopus OpenAlex

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