| Title: | Mixed-ligand copper(ii) complexes derived from pyridinecarbonitrile precursors : structural features and thermal behavior |
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| Authors: | ID Golobič, Amalija (Author)
ID Kristl, Matjaž (Author)
ID Podnar, Tinkara Marija (Author)
ID Jagličić, Zvonko (Author)
ID Dojer, Brina (Author) |
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| Files: |  inorganics-13-00287_(1).pdf (1,90 MB)
MD5: 8F1601DA08BC0944C53D335202F8D159
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| Language: | English |
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| Work type: | Article |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: | FKKT - Faculty of Chemistry and Chemical Engineering
FNM - Faculty of Natural Sciences and Mathematics
FGPA - Faculty of Civil Engineering, Transportation Engineering and Architecture
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| Abstract: | Pyridinecarbonitriles (pyCN), also referred to as cyanopyridines, are promising ligands for the formation of pyridine-based coordination compounds due to their two different N-donor atoms, which enable versatile coordination modes. Copper(II) complexes containing pyCN derivatives are of particular interest for their potential applications in medicinal chemistry and materials science. In this study, the synthesis, structural characterization, and thermal and magnetic properties of three new copper(II) complexes with 3-pyCN, 4-pyCN, and ethyl picolinimidate, obtained in situ by means of alcoholysis of 2-pyCN, are reported: [Cu2(μ-Ac)4(3-pyCN)2] (1), [Cu(H2O)2(Etpic)2]NO3 (2), and [Cu(NO3)2(CH3CN)(4-pyCN)2]·CH3CN (3). Single-crystal X-ray diffraction confirmed that complex 1 features a dinuclear paddle-wheel structure with bridging acetato ligands and monodentate 3-pyCN molecules, coordinated through the ring nitrogen, while complexes 2 and 3 are mononuclear. Thermal analysis showed an intense and highly exothermic decomposition of complex 3, containing nitrate ligands. Magnetic measurements revealed strong antiferromagnetic coupling in the dinuclear complex 1, whereas complexes 2 and 3 displayed paramagnetic behavior with effective magnetic moments ranging from 1.8 μB to 2.0 μB, consistent with isolated Cu(II) centers. |
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| Keywords: | copper(II) coordination compounds, cyanopyridines, crystal structure, magnetic properties, thermogravimetric analysis |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Submitted for review: | 04.08.2025 |
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| Article acceptance date: | 24.08.2025 |
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| Publication date: | 27.08.2025 |
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| Publisher: | MDPI |
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| Year of publishing: | 2025 |
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| Number of pages: | 19 str. |
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| Numbering: | Vol. 13, iss. 9, [article no.] 287 |
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| PID: | 20.500.12556/DKUM-94927  |
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| UDC: | 546 |
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| ISSN on article: | 2304-6740 |
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| COBISS.SI-ID: | 247026691 |
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| DOI: | 10.3390/inorganics13090287 |
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| Copyright: | © 2025 by the authors |
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| Publication date in DKUM: | 29.08.2025 |
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| Views: | 147 |
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| Downloads: | 11 |
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| Metadata: |    |
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| Categories: | Misc.
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