{"title":"Aggregation-Induced Spin-Crossover Switching in a Spin-Labile Iron(II) Complex","authors":"Fangqing Gao, Binbin Wang, Yan Liu, Tengli Wang, Liang Wang, Li-Fei Zou, Shufang Xue, Yunnan Guo","doi":"10.1021/acs.inorgchem.4c04701","DOIUrl":null,"url":null,"abstract":"In this study, an aggregate-responsive spin crossover (SCO) system was presented based on the spin-labile iron(II) complex Fe(HL)<sub>2</sub>(NCS)<sub>2</sub>·2DMF (<b>1</b>) (HL = methyl 2-(2-pyridinyl)-1H-benzimidazole-6-carboxylate). Complex <b>1</b> exhibits the switchable SCO behavior between the solution and crystalline state through the solvent-driven aggregation control. The addition of the poor solvent dioxane to the methanol solution of the title complex not only generates nanoparticles with increasingly larger sizes in accompaniment with the absence of SCO but also changes the orientation of the isothiocyanate from <i>cis</i> in the methanol solution to the <i>trans</i> isomer in the aggregate or solid via an aggregation process.","PeriodicalId":40,"journal":{"name":"Inorganic Chemistry","volume":"61 1","pages":""},"PeriodicalIF":4.7000,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Inorganic Chemistry","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.1021/acs.inorgchem.4c04701","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, INORGANIC & NUCLEAR","Score":null,"Total":0}
引用次数: 0
Abstract
In this study, an aggregate-responsive spin crossover (SCO) system was presented based on the spin-labile iron(II) complex Fe(HL)2(NCS)2·2DMF (1) (HL = methyl 2-(2-pyridinyl)-1H-benzimidazole-6-carboxylate). Complex 1 exhibits the switchable SCO behavior between the solution and crystalline state through the solvent-driven aggregation control. The addition of the poor solvent dioxane to the methanol solution of the title complex not only generates nanoparticles with increasingly larger sizes in accompaniment with the absence of SCO but also changes the orientation of the isothiocyanate from cis in the methanol solution to the trans isomer in the aggregate or solid via an aggregation process.
期刊介绍：
Inorganic Chemistry publishes fundamental studies in all phases of inorganic chemistry. Coverage includes experimental and theoretical reports on quantitative studies of structure and thermodynamics, kinetics, mechanisms of inorganic reactions, bioinorganic chemistry, and relevant aspects of organometallic chemistry, solid-state phenomena, and chemical bonding theory. Emphasis is placed on the synthesis, structure, thermodynamics, reactivity, spectroscopy, and bonding properties of significant new and known compounds.
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