Daiana Cabrosi, Juan H. Mecchia Ortiz, Luca M. Carrella, Eva Rentschler and Pablo Alborés
{"title":"大型镧系元素蝶形 CrIII2LnIII2 新戊酸盐配合物（Ln = Gd、Tb、Dy、Ho、Er、Tm 和 Yb）的 SMM 特征。","authors":"Daiana Cabrosi, Juan H. Mecchia Ortiz, Luca M. Carrella, Eva Rentschler and Pablo Alborés","doi":"10.1039/D4DT01492H","DOIUrl":null,"url":null,"abstract":"<p >In this work we report the synthesis, structural characterization and magnetic properties of a family of butterfly complexes {Cr<small><sub>2</sub></small>Ln<small><sub>2</sub></small>} with Ln = Tb (<strong>4</strong>), Ho (<strong>5</strong>), Er (<strong>6</strong>), Tm (<strong>7</strong>) and Yb (<strong>8</strong>), extending the family of previously reported isostructural compounds with Gd (<strong>1</strong>), Dy (<strong>2</strong>) and Y (<strong>3</strong>). As in <strong>1</strong> and <strong>2</strong>, an anti-ferromagnetic Cr(<small>III</small>)–Ln(<small>III</small>) exchange interaction is found. For oblate ions <strong>4</strong> and <strong>5</strong>, SMM behavior with a purely Orbach relaxation mechanism is observed with thermal barriers of 38 cm<small><sup>−1</sup></small> (<strong>4</strong>) and 32 cm<small><sup>−1</sup></small> (<strong>5</strong>). Complex <strong>4</strong> displays hysteresis opening up to 2.4 K with loss of magnetization at zero field. The prolate complex ions <strong>6</strong> and <strong>7</strong> are field-induced SMM's with dominant Orbach, direct and QTM relaxation mechanisms. Compound <strong>8</strong> did not show SMM properties.</p>","PeriodicalId":71,"journal":{"name":"Dalton Transactions","volume":null,"pages":null},"PeriodicalIF":3.5000,"publicationDate":"2024-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"SMM features of a large lanthanide family of butterfly Cr\\r\\nIII2Ln\\r\\nIII2 pivalate complexes (Ln = Gd, Tb, Dy, Ho, Er, Tm and Yb)†\",\"authors\":\"Daiana Cabrosi, Juan H. Mecchia Ortiz, Luca M. Carrella, Eva Rentschler and Pablo Alborés\",\"doi\":\"10.1039/D4DT01492H\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p >In this work we report the synthesis, structural characterization and magnetic properties of a family of butterfly complexes {Cr<small><sub>2</sub></small>Ln<small><sub>2</sub></small>} with Ln = Tb (<strong>4</strong>), Ho (<strong>5</strong>), Er (<strong>6</strong>), Tm (<strong>7</strong>) and Yb (<strong>8</strong>), extending the family of previously reported isostructural compounds with Gd (<strong>1</strong>), Dy (<strong>2</strong>) and Y (<strong>3</strong>). As in <strong>1</strong> and <strong>2</strong>, an anti-ferromagnetic Cr(<small>III</small>)–Ln(<small>III</small>) exchange interaction is found. For oblate ions <strong>4</strong> and <strong>5</strong>, SMM behavior with a purely Orbach relaxation mechanism is observed with thermal barriers of 38 cm<small><sup>−1</sup></small> (<strong>4</strong>) and 32 cm<small><sup>−1</sup></small> (<strong>5</strong>). Complex <strong>4</strong> displays hysteresis opening up to 2.4 K with loss of magnetization at zero field. The prolate complex ions <strong>6</strong> and <strong>7</strong> are field-induced SMM's with dominant Orbach, direct and QTM relaxation mechanisms. Compound <strong>8</strong> did not show SMM properties.</p>\",\"PeriodicalId\":71,\"journal\":{\"name\":\"Dalton Transactions\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":3.5000,\"publicationDate\":\"2024-07-05\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Dalton Transactions\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://pubs.rsc.org/en/content/articlelanding/2024/dt/d4dt01492h\",\"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":"Dalton Transactions","FirstCategoryId":"92","ListUrlMain":"https://pubs.rsc.org/en/content/articlelanding/2024/dt/d4dt01492h","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, INORGANIC & NUCLEAR","Score":null,"Total":0}
SMM features of a large lanthanide family of butterfly Cr
III2Ln
III2 pivalate complexes (Ln = Gd, Tb, Dy, Ho, Er, Tm and Yb)†
In this work we report the synthesis, structural characterization and magnetic properties of a family of butterfly complexes {Cr2Ln2} with Ln = Tb (4), Ho (5), Er (6), Tm (7) and Yb (8), extending the family of previously reported isostructural compounds with Gd (1), Dy (2) and Y (3). As in 1 and 2, an anti-ferromagnetic Cr(III)–Ln(III) exchange interaction is found. For oblate ions 4 and 5, SMM behavior with a purely Orbach relaxation mechanism is observed with thermal barriers of 38 cm−1 (4) and 32 cm−1 (5). Complex 4 displays hysteresis opening up to 2.4 K with loss of magnetization at zero field. The prolate complex ions 6 and 7 are field-induced SMM's with dominant Orbach, direct and QTM relaxation mechanisms. Compound 8 did not show SMM properties.
期刊介绍：
Dalton Transactions is a journal for all areas of inorganic chemistry, which encompasses the organometallic, bioinorganic and materials chemistry of the elements, with applications including synthesis, catalysis, energy conversion/storage, electrical devices and medicine. Dalton Transactions welcomes high-quality, original submissions in all of these areas and more, where the advancement of knowledge in inorganic chemistry is significant.
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