Svetlana P. Petrosyants, Konstantin A. Babeshkin, Alina S. Galkina, Andrey B. Ilyukhin, Nikolay N. Efimov and Igor L. Eremenko
{"title":"Dy, Er和Yb三磷酸配合物的分子磁性和固相转变","authors":"Svetlana P. Petrosyants, Konstantin A. Babeshkin, Alina S. Galkina, Andrey B. Ilyukhin, Nikolay N. Efimov and Igor L. Eremenko","doi":"10.1039/D5TC00871A","DOIUrl":null,"url":null,"abstract":"<p >New complexes containing Dy, Er and Yb, namely, [LnT<small><sub>3</sub></small>(H<small><sub>2</sub></small>O)<small><sub>2</sub></small>]·0.5H<small><sub>2</sub></small>O (<strong>1Ln</strong>), [LnT<small><sub>3</sub></small>HT]<small><sub>2</sub></small> (<strong>2Ln</strong>) and <strong>2Dy<small><sub><em>n</em></sub></small></strong>, where HT = 2-hydroxycyclohepta-2,4,6-trien-1-one, were synthesized and structurally characterized. The coordination number of Ln in isolated compounds is 8, and the coordination site is LnO<small><sub>8</sub></small>. The thermolysis of <strong>1Ln</strong> and <strong>2Ln</strong> results in the removal of coordinated and solvating water molecules and the formation of Ln<small><sub>2</sub></small>OT<small><sub>4</sub></small>. All synthesized compounds exhibit slow relaxation of magnetization under an external dc-field, and complex <strong>1Dy</strong> exhibits slow relaxation even under zero dc-field. The diamagnetic dilution of <strong>1Dy</strong> with an isomorphic yttrium complex resulted in the formation of <strong>1DyY</strong> and allowed us to mitigate a considerable involvement of the quantum tunneling of magnetization (QTM) in the magnetization reversal in zero dc-field. The relaxation paths for <strong>1Er</strong> and <strong>2Er</strong> involve the Orbach mechanism, with the corresponding energy barriers determined to be 39 K and 33 K, respectively.</p>","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 32","pages":" 16468-16477"},"PeriodicalIF":5.1000,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Molecular magnetism and solid-phase transformations of Dy, Er, and Yb tropolonate complexes†\",\"authors\":\"Svetlana P. Petrosyants, Konstantin A. Babeshkin, Alina S. Galkina, Andrey B. Ilyukhin, Nikolay N. Efimov and Igor L. Eremenko\",\"doi\":\"10.1039/D5TC00871A\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p >New complexes containing Dy, Er and Yb, namely, [LnT<small><sub>3</sub></small>(H<small><sub>2</sub></small>O)<small><sub>2</sub></small>]·0.5H<small><sub>2</sub></small>O (<strong>1Ln</strong>), [LnT<small><sub>3</sub></small>HT]<small><sub>2</sub></small> (<strong>2Ln</strong>) and <strong>2Dy<small><sub><em>n</em></sub></small></strong>, where HT = 2-hydroxycyclohepta-2,4,6-trien-1-one, were synthesized and structurally characterized. The coordination number of Ln in isolated compounds is 8, and the coordination site is LnO<small><sub>8</sub></small>. The thermolysis of <strong>1Ln</strong> and <strong>2Ln</strong> results in the removal of coordinated and solvating water molecules and the formation of Ln<small><sub>2</sub></small>OT<small><sub>4</sub></small>. All synthesized compounds exhibit slow relaxation of magnetization under an external dc-field, and complex <strong>1Dy</strong> exhibits slow relaxation even under zero dc-field. The diamagnetic dilution of <strong>1Dy</strong> with an isomorphic yttrium complex resulted in the formation of <strong>1DyY</strong> and allowed us to mitigate a considerable involvement of the quantum tunneling of magnetization (QTM) in the magnetization reversal in zero dc-field. The relaxation paths for <strong>1Er</strong> and <strong>2Er</strong> involve the Orbach mechanism, with the corresponding energy barriers determined to be 39 K and 33 K, respectively.</p>\",\"PeriodicalId\":84,\"journal\":{\"name\":\"Journal of Materials Chemistry C\",\"volume\":\" 32\",\"pages\":\" 16468-16477\"},\"PeriodicalIF\":5.1000,\"publicationDate\":\"2025-07-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Materials Chemistry C\",\"FirstCategoryId\":\"1\",\"ListUrlMain\":\"https://pubs.rsc.org/en/content/articlelanding/2025/tc/d5tc00871a\",\"RegionNum\":2,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Materials Chemistry C","FirstCategoryId":"1","ListUrlMain":"https://pubs.rsc.org/en/content/articlelanding/2025/tc/d5tc00871a","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Molecular magnetism and solid-phase transformations of Dy, Er, and Yb tropolonate complexes†
New complexes containing Dy, Er and Yb, namely, [LnT3(H2O)2]·0.5H2O (1Ln), [LnT3HT]2 (2Ln) and 2Dyn, where HT = 2-hydroxycyclohepta-2,4,6-trien-1-one, were synthesized and structurally characterized. The coordination number of Ln in isolated compounds is 8, and the coordination site is LnO8. The thermolysis of 1Ln and 2Ln results in the removal of coordinated and solvating water molecules and the formation of Ln2OT4. All synthesized compounds exhibit slow relaxation of magnetization under an external dc-field, and complex 1Dy exhibits slow relaxation even under zero dc-field. The diamagnetic dilution of 1Dy with an isomorphic yttrium complex resulted in the formation of 1DyY and allowed us to mitigate a considerable involvement of the quantum tunneling of magnetization (QTM) in the magnetization reversal in zero dc-field. The relaxation paths for 1Er and 2Er involve the Orbach mechanism, with the corresponding energy barriers determined to be 39 K and 33 K, respectively.
期刊介绍:
The Journal of Materials Chemistry is divided into three distinct sections, A, B, and C, each catering to specific applications of the materials under study:
Journal of Materials Chemistry A focuses primarily on materials intended for applications in energy and sustainability.
Journal of Materials Chemistry B specializes in materials designed for applications in biology and medicine.
Journal of Materials Chemistry C is dedicated to materials suitable for applications in optical, magnetic, and electronic devices.
Example topic areas within the scope of Journal of Materials Chemistry C are listed below. This list is neither exhaustive nor exclusive.
Bioelectronics
Conductors
Detectors
Dielectrics
Displays
Ferroelectrics
Lasers
LEDs
Lighting
Liquid crystals
Memory
Metamaterials
Multiferroics
Photonics
Photovoltaics
Semiconductors
Sensors
Single molecule conductors
Spintronics
Superconductors
Thermoelectrics
Topological insulators
Transistors