Lanthanide(III) Complexes Based on Tris(2-pyridyl)phosphine Oxide: First Examples

Lanthanide(III) Complexes Based on Tris(2-pyridyl)phosphine Oxide: First Examples Full article

Journal

Russian Journal of Coordination Chemistry
ISSN: 1070-3284 , E-ISSN: 1608-3318

Output data

Year: 2024, Volume: 50, Number: 9, Pages: 745–756 Pages count : 12 DOI: 10.1134/S1070328424600505

Tags

lanthanides, complexes, phosphine oxide, structure, photoluminescence

Authors

Bryleva Yu.A. ¹ , Glinskaya L.A. ¹ , Yzhikova K.M. ¹ , Artem’ev A.V. ¹ , Rakhmanova M.I. ¹ , Baranov A.Yu. ¹

Affiliations

1	Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences

A series of mononuclear complexes [Ln(Py3PO)2(NO3)3]·1.5Me2CO (Ln = Sm, Eu, Gd, Tb, Dy) and [Ln(Py3PO)(TTA)3] (Ln = Eu, Tb; TTA‒ is thenoyltrifluoroacetonate ion) based on tris(2-pyridyl) phosphine oxide (Py3PO) is synthesized and studied. In the synthesized compounds, Py3PO acts as a N,O-chelating ligand resulting in the formation of coordination polyhedra N2O8 and NO7 of the Ln atom in complexes [Ln(Py3PO)2(NO3)3]·1.5Me2CO and [Ln(Py3PO)(TTA)3], respectively. The complexes of Sm3+, Eu3+, Tb3+, and Dy3+ ions exhibit lanthanide-centered photoluminescence in the solid phase at 300 K. The energy of the T1 triplet level of Py3PO is determined to be 21 900 cm‒1 from the ligand-centered phosphorescence spectrum of the Gd(III) complex at 77 K. Among the complexes with the ions, Py3PO exhibits the highest sensitizing ability toward Tb3+, whereas the ligand environment in the complexes with the TTA‒ ions most efficiently sensitizes the Eu3+ ion luminescence.

Bryleva Y.A. , Glinskaya L.A. , Yzhikova K.M. , Artem’ev A.V. , Rakhmanova M.I. , Baranov A.Y.
Lanthanide(III) Complexes Based on Tris(2-pyridyl)phosphine Oxide: First Examples
Russian Journal of Coordination Chemistry. 2024. V.50. N9. P.745–756. DOI: 10.1134/S1070328424600505

Submitted:	Mar 27, 2024
Accepted:	Apr 2, 2024
Published print:	Sep 30, 2024

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