Synthesis, crystal structure, magnetic properties and Hirshfeld surface analysis of two cobalt(II) complex anions templated by pyridinium-based cations
| العنوان: | Synthesis, crystal structure, magnetic properties and Hirshfeld surface analysis of two cobalt(II) complex anions templated by pyridinium-based cations |
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| المؤلفون: | Line D.D. Njiki, Bridget N. Ndosiri, Augustin N. Nana, Adam Bouraima, Ledoux S. Pouamo, Frédéric Capet, Michel Foulon, Justin Nenwa |
| المساهمون: | University of Yaoundé [Cameroun], Faculté des Sciences [Université des Sciences et Techniques de Masuku], Université des Sciences et Techniques de Masuku (USTM), Unité de Catalyse et Chimie du Solide - UMR 8181 (UCCS), Université d'Artois (UA)-Centrale Lille-Institut de Chimie du CNRS (INC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS), Université de Lille, Sciences et Technologies |
| المصدر: | Polyhedron Polyhedron, 2023, Polyhedron, 232, pp.116280. ⟨10.1016/j.poly.2023.116280⟩ |
| بيانات النشر: | HAL CCSD, 2023. |
| سنة النشر: | 2023 |
| مصطلحات موضوعية: | Inorganic Chemistry, Hybrid salts, Cobalt(II) complexes, Crystal structures, Magnetic properties, Materials Chemistry, Hirshfeld surface analysis, [CHIM.CATA]Chemical Sciences/Catalysis, Physical and Theoretical Chemistry |
| الوصف: | International audience; Two organic–inorganic hybrid salts, (C6H9N2)2[Co(C2O4)2]·H2O (1) and (C5H7N2)2[Co(C2O4)2(H2O)2] (2) (C6H9N2+ = 2-amino-3-methylpyridinium; C5H7N2+ = 4-aminopyridinium) have been obtained. Salt 1 is characterized by the formation of one-dimensional chains of the anionic complexes [Co(C2O4)2]2-, with the Co(II) centers located in a distorted (2 + 2 + 2) octahedral environment of six oxygen atoms from three chelating oxalato(2 − ) ligands. By contrast, salt 2 features discrete anionic complexes [Co(C2O4)2(H2O)2]2- with distorted (4 + 2) octahedral CoO6 coordination sphere formed by two bidentate O,O-donor oxalato(2 − ) ligands in the equatorial plane and two aqua ligands in the axial positions. Hydrogen bonding interactions of the type Osingle bondH∙∙∙O and Nsingle bondH∙∙∙O along with π–π stacking interactions between pyridine rings contribute to the stabilization of the 3-D supramolecular frameworks in 1 and 2. Temperature-dependence magnetic moment (µ) collected under zero-field cooled (ZFC) and field-cooled (FC) conditions revealed strong antiferromagnetic ordering below TN = 25 K for 1, a behavior which is confirmed by the negative Weiss constant, θ = − 27.6 K. By contrast, in 2, the Weiss constant, θ = 0 K is in line with a paramagnetic behavior. The three-dimensional Hirshfeld surface (3D-HS) analysis and the two-dimensional fingerprint plots (2D-FP) revealed that in 2, the structure is dominated by H∙∙∙O/ H∙∙∙O and H∙∙∙H contacts. |
| اللغة: | English |
| تدمد: | 0277-5387 |
| DOI: | 10.1016/j.poly.2023.116280⟩ |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1c072c91109055b3e88ed7fa02ec62be https://hal.univ-lille.fr/hal-04138966 |
| Rights: | CLOSED |
| رقم الانضمام: | edsair.doi.dedup.....1c072c91109055b3e88ed7fa02ec62be |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 02775387 |
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| DOI: | 10.1016/j.poly.2023.116280⟩ |