D. A. Bashirov, D. I. Lashchenko, T. S. Sukhikh, S. N. Konchenko
{"title":"Synthesis and Structure of [{Ln(Me2Si(NMes)2)(THF)2}2(μ-L)2] (L = \\(\\mathbf{BH}_{\\mathbf{4}}^{-}\\), Ln = Y, Dy; L = PhS–, Ln = Y, Tb, Dy) Complexes","authors":"D. A. Bashirov, D. I. Lashchenko, T. S. Sukhikh, S. N. Konchenko","doi":"10.1134/S0022476624030090","DOIUrl":null,"url":null,"abstract":"<p>New silanediamide complexes of rare-earth elements are synthesized: [{Dy(Me<sub>2</sub>Si(NMes)<sub>2</sub>)(THF)<sub>2</sub>}<sub>2</sub>(μ-Cl)<sub>2</sub>] (<b>Dy1</b>), [{Ln(Me<sub>2</sub>Si(NMes)<sub>2</sub>)(THF)<sub>2</sub>}<sub>2</sub>(μ-BH<sub>4</sub>)<sub>2</sub>] (<b>Ln2</b>, Ln = Y, Dy), and [{Ln(Me<sub>2</sub>Si(NMes)<sub>2</sub>)(THF)<sub>2</sub>}<sub>2</sub> (μ-SPh)<sub>2</sub>] (<b>Ln3</b>, Ln = Y, Tb, Dy), Mes = 2,4,6-(CH<sub>3</sub>)C<sub>6</sub>H<sub>2</sub>=mesityl. The compounds are isolated as crystalline phases <b>Dy1</b>, <b>Ln2</b> (Ln = Y, Dy), <b>Y3·2THF</b>, <b>Tb3·2C</b><sub><b>7</b></sub><b>H</b><sub><b>8</b></sub>, <b>Dy3·2THF</b>, and <b>Dy3·2C</b><sub><b>7</b></sub><b>H</b><sub><b>8</b></sub> and characterized by single crystal X-ray diffraction. All complexes have a binuclear structure; a silanediamide ligand is chelated to each Ln atom, and Cl<sup>–</sup>, <span>\\(\\text{BH}_{4}^{-}\\)</span>, or SPh<sup>–</sup> act as bridges. By photoluminescence spectroscopy of the solutions of Tb and Dy complexes in THF it is shown that (Me<sub>2</sub>Si(NMes)<sub>2</sub>)<sup>2–</sup> is an effective ligand antenna, which sensitizes metal-centered emission of these lanthanides.</p>","PeriodicalId":668,"journal":{"name":"Journal of Structural Chemistry","volume":"65 3","pages":"534 - 545"},"PeriodicalIF":1.4000,"publicationDate":"2024-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Structural Chemistry","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1134/S0022476624030090","RegionNum":4,"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
New silanediamide complexes of rare-earth elements are synthesized: [{Dy(Me2Si(NMes)2)(THF)2}2(μ-Cl)2] (Dy1), [{Ln(Me2Si(NMes)2)(THF)2}2(μ-BH4)2] (Ln2, Ln = Y, Dy), and [{Ln(Me2Si(NMes)2)(THF)2}2 (μ-SPh)2] (Ln3, Ln = Y, Tb, Dy), Mes = 2,4,6-(CH3)C6H2=mesityl. The compounds are isolated as crystalline phases Dy1, Ln2 (Ln = Y, Dy), Y3·2THF, Tb3·2C7H8, Dy3·2THF, and Dy3·2C7H8 and characterized by single crystal X-ray diffraction. All complexes have a binuclear structure; a silanediamide ligand is chelated to each Ln atom, and Cl–, \(\text{BH}_{4}^{-}\), or SPh– act as bridges. By photoluminescence spectroscopy of the solutions of Tb and Dy complexes in THF it is shown that (Me2Si(NMes)2)2– is an effective ligand antenna, which sensitizes metal-centered emission of these lanthanides.
期刊介绍：
Journal is an interdisciplinary publication covering all aspects of structural chemistry, including the theory of molecular structure and chemical bond; the use of physical methods to study the electronic and spatial structure of chemical species; structural features of liquids, solutions, surfaces, supramolecular systems, nano- and solid materials; and the crystal structure of solids.
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