Ibrahim Karoui, Ahlem Maalaoui, Sylvain Duval, Mohamed Rzaigui, Samah Akriche
{"title":"顺磁性钴（II）-六硼酸酯（2-）基半有机配合物的简易合成：X射线晶体结构、Hirshfeld表面分析、光学和磁学性质的综合研究","authors":"Ibrahim Karoui, Ahlem Maalaoui, Sylvain Duval, Mohamed Rzaigui, Samah Akriche","doi":"10.1007/s11243-023-00549-4","DOIUrl":null,"url":null,"abstract":"<div><p>Two new paramagnetic hybrid cobalt(II)-hexaborate(2-)-based semi-organic complexes: (2A3MP)<sub>2</sub>[Co{κ<sup>3</sup>O–B<sub>6</sub>O<sub>7</sub>(OH)<sub>6</sub>}<sub>2</sub>].2H<sub>2</sub>O (<b>1</b>) and (2A4MP)<sub>2</sub>[Co{κ<sup>3</sup>O–B<sub>6</sub>O<sub>7</sub>(OH)<sub>6</sub>}<sub>2</sub>].2H<sub>2</sub>O (<b>2</b>) (2A3MP = 2-amino-3-methylpyridinium, 2A4MP = 2-amino-4-methylpyridinium) have been obtained and characterized by X-ray diffraction, FT-IR, TG–DTA, optical and magnetic measurements. X-ray diffraction revealed two isostructural compounds based on Co(II) complexes of bis(κ<sup>3</sup>O-donor hexaborate(2-)) ligands, [Co{κ<sup>3</sup>O–B<sub>6</sub>O<sub>7</sub>(OH)<sub>6</sub>}<sub>2</sub>]<sup>2−</sup>, differing only in the organic counter cation. The hydrated oxidopolyborate anions are extensively H-bounded to form 3D-porous supramolecular anionic frameworks. In both <b>1</b> and <b>2</b> isostructures, <i>2A3MP</i> and <i>2A4MP</i> cations are present in the created voids of the inorganic frameworks through a set of H-bonds with 58.5 and 60.5% H…O/O…H intercontact contributions, respectively, for <b>1</b> and <b>2</b> as confirmed by Hirshfeld surfaces analysis. The optical band gap of Co(II) complexes ranges between 2.72 and 2.82 eV. Both compounds exhibited well-resolved paramagnetic properties with magnetic susceptibility values ranging between 0.9552 cm<sup>3</sup> mol<sup>−1</sup> (at 2 K) and 0.0088 cm<sup>3</sup> mol<sup>−1</sup> (at 300 K), typical of octahedral Co(II) complexes.</p></div>","PeriodicalId":1,"journal":{"name":"Accounts of Chemical Research","volume":null,"pages":null},"PeriodicalIF":16.4000,"publicationDate":"2023-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Facile synthesis of paramagnetic Co(II)-hexaborate(2-)-based semi-organic complexes: a combined investigation on X-ray crystal structure, Hirshfeld surfaces analysis, optical and magnetic properties\",\"authors\":\"Ibrahim Karoui, Ahlem Maalaoui, Sylvain Duval, Mohamed Rzaigui, Samah Akriche\",\"doi\":\"10.1007/s11243-023-00549-4\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Two new paramagnetic hybrid cobalt(II)-hexaborate(2-)-based semi-organic complexes: (2A3MP)<sub>2</sub>[Co{κ<sup>3</sup>O–B<sub>6</sub>O<sub>7</sub>(OH)<sub>6</sub>}<sub>2</sub>].2H<sub>2</sub>O (<b>1</b>) and (2A4MP)<sub>2</sub>[Co{κ<sup>3</sup>O–B<sub>6</sub>O<sub>7</sub>(OH)<sub>6</sub>}<sub>2</sub>].2H<sub>2</sub>O (<b>2</b>) (2A3MP = 2-amino-3-methylpyridinium, 2A4MP = 2-amino-4-methylpyridinium) have been obtained and characterized by X-ray diffraction, FT-IR, TG–DTA, optical and magnetic measurements. X-ray diffraction revealed two isostructural compounds based on Co(II) complexes of bis(κ<sup>3</sup>O-donor hexaborate(2-)) ligands, [Co{κ<sup>3</sup>O–B<sub>6</sub>O<sub>7</sub>(OH)<sub>6</sub>}<sub>2</sub>]<sup>2−</sup>, differing only in the organic counter cation. The hydrated oxidopolyborate anions are extensively H-bounded to form 3D-porous supramolecular anionic frameworks. In both <b>1</b> and <b>2</b> isostructures, <i>2A3MP</i> and <i>2A4MP</i> cations are present in the created voids of the inorganic frameworks through a set of H-bonds with 58.5 and 60.5% H…O/O…H intercontact contributions, respectively, for <b>1</b> and <b>2</b> as confirmed by Hirshfeld surfaces analysis. The optical band gap of Co(II) complexes ranges between 2.72 and 2.82 eV. Both compounds exhibited well-resolved paramagnetic properties with magnetic susceptibility values ranging between 0.9552 cm<sup>3</sup> mol<sup>−1</sup> (at 2 K) and 0.0088 cm<sup>3</sup> mol<sup>−1</sup> (at 300 K), typical of octahedral Co(II) complexes.</p></div>\",\"PeriodicalId\":1,\"journal\":{\"name\":\"Accounts of Chemical Research\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":16.4000,\"publicationDate\":\"2023-08-16\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Accounts of Chemical Research\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s11243-023-00549-4\",\"RegionNum\":1,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Accounts of Chemical Research","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1007/s11243-023-00549-4","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
Facile synthesis of paramagnetic Co(II)-hexaborate(2-)-based semi-organic complexes: a combined investigation on X-ray crystal structure, Hirshfeld surfaces analysis, optical and magnetic properties
Two new paramagnetic hybrid cobalt(II)-hexaborate(2-)-based semi-organic complexes: (2A3MP)2[Co{κ3O–B6O7(OH)6}2].2H2O (1) and (2A4MP)2[Co{κ3O–B6O7(OH)6}2].2H2O (2) (2A3MP = 2-amino-3-methylpyridinium, 2A4MP = 2-amino-4-methylpyridinium) have been obtained and characterized by X-ray diffraction, FT-IR, TG–DTA, optical and magnetic measurements. X-ray diffraction revealed two isostructural compounds based on Co(II) complexes of bis(κ3O-donor hexaborate(2-)) ligands, [Co{κ3O–B6O7(OH)6}2]2−, differing only in the organic counter cation. The hydrated oxidopolyborate anions are extensively H-bounded to form 3D-porous supramolecular anionic frameworks. In both 1 and 2 isostructures, 2A3MP and 2A4MP cations are present in the created voids of the inorganic frameworks through a set of H-bonds with 58.5 and 60.5% H…O/O…H intercontact contributions, respectively, for 1 and 2 as confirmed by Hirshfeld surfaces analysis. The optical band gap of Co(II) complexes ranges between 2.72 and 2.82 eV. Both compounds exhibited well-resolved paramagnetic properties with magnetic susceptibility values ranging between 0.9552 cm3 mol−1 (at 2 K) and 0.0088 cm3 mol−1 (at 300 K), typical of octahedral Co(II) complexes.
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Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance.
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