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":803,"journal":{"name":"Transition Metal Chemistry","volume":null,"pages":null},"PeriodicalIF":1.6000,"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\":803,\"journal\":{\"name\":\"Transition Metal Chemistry\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":1.6000,\"publicationDate\":\"2023-08-16\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Transition Metal Chemistry\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s11243-023-00549-4\",\"RegionNum\":4,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"CHEMISTRY, INORGANIC & NUCLEAR\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Transition Metal Chemistry","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1007/s11243-023-00549-4","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, INORGANIC & NUCLEAR","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.
期刊介绍：
Transition Metal Chemistry is an international journal designed to deal with all aspects of the subject embodied in the title: the preparation of transition metal-based molecular compounds of all kinds (including complexes of the Group 12 elements), their structural, physical, kinetic, catalytic and biological properties, their use in chemical synthesis as well as their application in the widest context, their role in naturally occurring systems etc.
Manuscripts submitted to the journal should be of broad appeal to the readership and for this reason, papers which are confined to more specialised studies such as the measurement of solution phase equilibria or thermal decomposition studies, or papers which include extensive material on f-block elements, or papers dealing with non-molecular materials, will not normally be considered for publication. Work describing new ligands or coordination geometries must provide sufficient evidence for the confident assignment of structural formulae; this will usually take the form of one or more X-ray crystal structures.
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