Yu. A. Bryleva, L. A. Glinskaya, K. M. Yzhikova, A. V. Artem’ev, M. I. Rakhmanova, A. Yu. Baranov
{"title":"Lanthanide(III) Complexes Based on Tris(2-pyridyl)phosphine Oxide: First Examples","authors":"Yu. A. Bryleva, L. A. Glinskaya, K. M. Yzhikova, A. V. Artem’ev, M. I. Rakhmanova, A. Yu. Baranov","doi":"10.1134/S1070328424600505","DOIUrl":null,"url":null,"abstract":"<p>A series of mononuclear complexes [Ln(Py<sub>3</sub>PO)<sub>2</sub>(NO<sub>3</sub>)<sub>3</sub>]·1.5Me<sub>2</sub>CO (Ln = Sm, Eu, Gd, Tb, Dy) and [Ln(Py<sub>3</sub>PO)(TTA)<sub>3</sub>] (Ln = Eu, Tb; TTA<sup>‒</sup> is thenoyltrifluoroacetonate ion) based on tris(2-pyridyl)phosphine oxide (Py<sub>3</sub>PO) is synthesized and studied. In the synthesized compounds, Py<sub>3</sub>PO acts as a N,O-chelating ligand resulting in the formation of coordination polyhedra N<sub>2</sub>O<sub>8</sub> and NO<sub>7</sub> of the Ln atom in complexes [Ln(Py<sub>3</sub>PO)<sub>2</sub>(NO<sub>3</sub>)<sub>3</sub>]·1.5Me<sub>2</sub>CO and [Ln(Py<sub>3</sub>PO)(TTA)<sub>3</sub>], respectively. The complexes of Sm<sup>3+</sup>, Eu<sup>3+</sup>, Tb<sup>3+</sup>, and Dy<sup>3+</sup> ions exhibit lanthanide-centered photoluminescence in the solid phase at 300 K. The energy of the <i>T</i><sub>1</sub> triplet level of Py<sub>3</sub>PO is determined to be 21 900 cm<sup>‒1</sup> from the ligand-centered phosphorescence spectrum of the Gd(III) complex at 77 K. Among the complexes with the <span>\\({\\text{NO}}_{3}^{ - }\\)</span> ions, Py<sub>3</sub>PO exhibits the highest sensitizing ability toward Tb<sup>3+</sup>, whereas the ligand environment in the complexes with the TTA<sup>‒</sup> ions most efficiently sensitizes the Eu<sup>3+</sup> ion luminescence.</p>","PeriodicalId":759,"journal":{"name":"Russian Journal of Coordination Chemistry","volume":"50 9","pages":"745 - 756"},"PeriodicalIF":1.1000,"publicationDate":"2024-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Russian Journal of Coordination Chemistry","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1134/S1070328424600505","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"CHEMISTRY, INORGANIC & NUCLEAR","Score":null,"Total":0}
引用次数: 0
Abstract
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 \({\text{NO}}_{3}^{ - }\) 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.
期刊介绍:
Russian Journal of Coordination Chemistry is a journal that publishes reviews, original papers, and short communications on all aspects of theoretical and experimental coordination chemistry. Modern coordination chemistry is an interdisciplinary science that makes a bridge between inorganic, organic, physical, analytical, and biological chemistry.