Academic Journal
Trapping an unprecedented octacoordinated iron(ii) complex with neutral bis-tetrazolylpyridyl ligands and solvent molecules
| العنوان: | Trapping an unprecedented octacoordinated iron(ii) complex with neutral bis-tetrazolylpyridyl ligands and solvent molecules |
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| المؤلفون: | Rigamonti, Luca, Marchi, Lorenzo, Fiorini, Valentina, Stagni, Stefano, Zacchini, Stefano, Pinkowicz, Dawid, Dziedzic-Kocurek, Katarzyna, Forni, Alessandra, Muniz Miranda, Francesco, Mazzoni, Rita |
| المساهمون: | Rigamonti, Luca, Marchi, Lorenzo, Fiorini, Valentina, Stagni, Stefano, Zacchini, Stefano, Pinkowicz, Dawid, Dziedzic-Kocurek, Katarzyna, Forni, Alessandra, Muniz Miranda, Francesco, Mazzoni, Rita |
| سنة النشر: | 2024 |
| المجموعة: | IRIS Università degli Studi di Bologna (CRIS - Current Research Information System) |
| مصطلحات موضوعية: | Iron octacoordinated complex, tetrazolylpyridyl ligand, magnetic propertie, structural properties |
| الوصف: | Iron(II) can show a very rich coordination chemistry with concomitant modulation of its properties as promising functional materials. Metalation of the neutral tridentate nitrogen-donor mer-coordinating ligand 2,6-bis(2-(methyl)-2H-tetrazol-5-yl)pyridine (Me2btp) with Fe(ClO4)2·6H2O through accurate solvent polarity control enables the selective crystallization of [FeHS/LS(Me2btp)2](ClO4)2·MeCN·2.75H2O (2HS/LS·MeCN·2.75H2O) as red rods, where half of the iron(II) centres resides in the low spin (LS, S = 0) state and the other half is in the high spin (HS, S = 2) state. The red rods spontaneously convert into yellow crystals once removed from the mother liquor and exposed to air due to solvent rearrangement within the crystal packing; these new crystals can be assigned to [FeHS(Me2btp)2](ClO4)2·solvent (2HS·solvent) where all the iron(II) centres are now blocked in the HS state, as confirmed by magnetic measurements. The polarity of the crystallization solvent, together with the maintenance of the crystals within the mother liquor, are pivotal for the reactivity and interconversion of different species. Indeed, upon long standing in solution, 2HS/LS·MeCN·2.75H2O converts to another form of red crystals belonging to [FeLS(Me2btp)2][FeHS(Me2btp)(MeCN)2(H2O)](ClO4)4·MeCN (2LS·3HS·MeCN), as confirmed by single crystal X-ray diffraction data. In this co-crystal, the iron(II) in 2 resides in the LS state at all temperatures while the iron(II) in 3 is blocked in the HS state. Well-formed yellow crystals could be also isolated among the red crystals of 2HS/LS·MeCN·2.75H2O, and they could be identified as the unprecedented octacoordinated species [Fe(Me2btp)2(MeCN)(H2O)](ClO4)2·H2O (1·H2O) by single-crystal X-ray diffraction. These yellow crystals are stable in the air, but slowly convert into 2LS·3HS·MeCN if kept in the mother liquor for about one week. 1·H2O can be considered the trapped intermediate in the solid state during the conversion of [FeHS(Me2btp)2]2+ into [FeHS(Me2btp)(MeCN)2(H2O)]2+ in solution, where the ... |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | ELETTRONICO |
| اللغة: | English |
| Relation: | info:eu-repo/semantics/altIdentifier/pmid/38270176; info:eu-repo/semantics/altIdentifier/wos/WOS:001150641900001; volume:53; firstpage:3490; lastpage:3498; numberofpages:9; journal:DALTON TRANSACTIONS; https://hdl.handle.net/11585/964822; https://pubs.rsc.org/en/content/articlelanding/2024/dt/d3dt04026g |
| DOI: | 10.1039/d3dt04026g |
| الاتاحة: | https://hdl.handle.net/11585/964822 https://doi.org/10.1039/d3dt04026g https://pubs.rsc.org/en/content/articlelanding/2024/dt/d3dt04026g |
| Rights: | info:eu-repo/semantics/openAccess |
| رقم الانضمام: | edsbas.4801CD85 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1039/d3dt04026g |
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