含12h -喹啉[2,3-b]苯恶嗪阳离子和[Ln(hfac)4]−阴离子的新系列盐

IF 2.4 3区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR

Polyhedron Pub Date : 2025-07-08 DOI:10.1016/j.poly.2025.117668

Е.P. Ivakhnenko , D.V. Korchagin , N.I. Omelichkin , G.V. Shilov , A.A. Krainyukov , M.V. Zhidkov , A.I. Dmitriev , O.P. Demidov , P.A. Knyazev , A.V. Chernyshev , A.V. Palii , V.I. Minkin , S.M. Aldoshin

{"title":"含12h -喹啉[2,3-b]苯恶嗪阳离子和[Ln(hfac)4]−阴离子的新系列盐","authors":"Е.P. Ivakhnenko , D.V. Korchagin , N.I. Omelichkin , G.V. Shilov , A.A. Krainyukov , M.V. Zhidkov , A.I. Dmitriev , O.P. Demidov , P.A. Knyazev , A.V. Chernyshev , A.V. Palii , V.I. Minkin , S.M. Aldoshin","doi":"10.1016/j.poly.2025.117668","DOIUrl":null,"url":null,"abstract":"<div><div>The reaction of 12H-quinoxaline[2,3-<em>b</em>]phenoxazine (QOPO) with lanthanide hexafluoroacetylacetonates is accompanied by protonation of the QOPO and leads to the formation of salts of the general formula [QOPOH]<sup>+</sup>[Ln(hfac)<sub>4</sub>]<sup>−</sup> (Ln = Nd, Dy, Tb, Ho), whose structures have been determined by X-ray diffraction analysis and <sup>1</sup>H NMR spectroscopy. The compounds are characterized by long wavelength absorption and fluorescence (λ<sub>fl</sub> = 677–740 nm). The study of the magnetic properties of the complexes has revealed that the Tb complex exhibits slow magnetic relaxation under an applied <em>dc</em> field, while the Dy complex behaves as single-ion magnet (SIM) even at zero field. These two compounds are the first examples of anionic complexes based on Dy and Tb ions coordinated by four hexafluoroacetylacetonates that exhibit the SIM properties under zero and applied <em>dc</em> fields, respectively.</div></div>","PeriodicalId":20278,"journal":{"name":"Polyhedron","volume":"280 ","pages":"Article 117668"},"PeriodicalIF":2.4000,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"New series of salts with 12H-quinoxalino[2,3-b]phenoxazinium cation and [Ln(hfac)4]− anions\",\"authors\":\"Е.P. Ivakhnenko , D.V. Korchagin , N.I. Omelichkin , G.V. Shilov , A.A. Krainyukov , M.V. Zhidkov , A.I. Dmitriev , O.P. Demidov , P.A. Knyazev , A.V. Chernyshev , A.V. Palii , V.I. Minkin , S.M. Aldoshin\",\"doi\":\"10.1016/j.poly.2025.117668\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>The reaction of 12H-quinoxaline[2,3-<em>b</em>]phenoxazine (QOPO) with lanthanide hexafluoroacetylacetonates is accompanied by protonation of the QOPO and leads to the formation of salts of the general formula [QOPOH]<sup>+</sup>[Ln(hfac)<sub>4</sub>]<sup>−</sup> (Ln = Nd, Dy, Tb, Ho), whose structures have been determined by X-ray diffraction analysis and <sup>1</sup>H NMR spectroscopy. The compounds are characterized by long wavelength absorption and fluorescence (λ<sub>fl</sub> = 677–740 nm). The study of the magnetic properties of the complexes has revealed that the Tb complex exhibits slow magnetic relaxation under an applied <em>dc</em> field, while the Dy complex behaves as single-ion magnet (SIM) even at zero field. These two compounds are the first examples of anionic complexes based on Dy and Tb ions coordinated by four hexafluoroacetylacetonates that exhibit the SIM properties under zero and applied <em>dc</em> fields, respectively.</div></div>\",\"PeriodicalId\":20278,\"journal\":{\"name\":\"Polyhedron\",\"volume\":\"280 \",\"pages\":\"Article 117668\"},\"PeriodicalIF\":2.4000,\"publicationDate\":\"2025-07-08\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Polyhedron\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0277538725002827\",\"RegionNum\":3,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, INORGANIC & NUCLEAR\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Polyhedron","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0277538725002827","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, INORGANIC & NUCLEAR","Score":null,"Total":0}

引用次数: 0

摘要

12h -喹啉[2,3-b]苯氧嗪（QOPO）与镧系六氟乙酰丙酮酸盐发生质子化反应，生成了通式为[QOPOH]+[Ln(hfac)4]−(Ln = Nd, Dy, Tb, Ho)的盐，通过x射线衍射分析和1H NMR谱分析确定了其结构。化合物具有长波吸收和荧光特性（λfl = 677 ~ 740 nm）。对配合物的磁性研究表明，Tb配合物在外加直流场下表现出缓慢的磁弛豫，而Dy配合物即使在零场下也表现为单离子磁铁（SIM）。这两种化合物是由四种六氟乙酰丙酮酸盐配位的基于Dy和Tb离子的阴离子配合物的第一个例子，它们分别在零直流和外加直流场下表现出SIM特性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

New series of salts with 12H-quinoxalino[2,3-b]phenoxazinium cation and [Ln(hfac)4]− anions

查看原文本刊更多论文

New series of salts with 12H-quinoxalino[2,3-b]phenoxazinium cation and [Ln(hfac)4]− anions

The reaction of 12H-quinoxaline[2,3-b]phenoxazine (QOPO) with lanthanide hexafluoroacetylacetonates is accompanied by protonation of the QOPO and leads to the formation of salts of the general formula [QOPOH]⁺[Ln(hfac)₄]⁻ (Ln = Nd, Dy, Tb, Ho), whose structures have been determined by X-ray diffraction analysis and ¹H NMR spectroscopy. The compounds are characterized by long wavelength absorption and fluorescence (λ_fl = 677–740 nm). The study of the magnetic properties of the complexes has revealed that the Tb complex exhibits slow magnetic relaxation under an applied dc field, while the Dy complex behaves as single-ion magnet (SIM) even at zero field. These two compounds are the first examples of anionic complexes based on Dy and Tb ions coordinated by four hexafluoroacetylacetonates that exhibit the SIM properties under zero and applied dc fields, respectively.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

Polyhedron 化学-晶体学

CiteScore

4.90

自引率

7.70%

发文量

515

审稿时长

2 months

期刊介绍： Polyhedron publishes original, fundamental, experimental and theoretical work of the highest quality in all the major areas of inorganic chemistry. This includes synthetic chemistry, coordination chemistry, organometallic chemistry, bioinorganic chemistry, and solid-state and materials chemistry. Papers should be significant pieces of work, and all new compounds must be appropriately characterized. The inclusion of single-crystal X-ray structural data is strongly encouraged, but papers reporting only the X-ray structure determination of a single compound will usually not be considered. Papers on solid-state or materials chemistry will be expected to have a significant molecular chemistry component (such as the synthesis and characterization of the molecular precursors and/or a systematic study of the use of different precursors or reaction conditions) or demonstrate a cutting-edge application (for example inorganic materials for energy applications). Papers dealing only with stability constants are not considered.