20.500.12556/DKUM-94927 Mixed-ligand copper(ii) complexes derived from pyridinecarbonitrile precursors structural features and thermal behavior 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. copper(II) coordination compounds cyanopyridines crystal structure magnetic properties thermogravimetric analysis baker termogravimetrična analiza kristalne strukture cianopiridi magnetne lastnosti true false true MDPI Angleški jezik Slovenski jezik https://www.mdpi.com/journal/inorganics © 2025 by the authors Članek v reviji 2025-08-29 11:05:34 2025-08-29 11:05:34 2025-08-31 03:16:13 0000-00-00 00:00:00 2025 0 0 19 str. iss. 9, [article no.] 287 Vol. 13 2025 0000-00-00 Zaloznikova Objavljeno NiDoloceno 2025-08-04 2025-08-24 2025-08-27 546 247026691 10.3390/inorganics13090287 2304-6740 inorganics-13-00287_(1).pdf inorganics-13-00287_(1).pdf 1 8F1601DA08BC0944C53D335202F8D159 91c7b730bbd5da97dc147aa9caab7fb5ffddf358b13291f0c56b4cde32b05e73 b2f17cd5-84b7-11f0-b363-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=196987 Fakulteta za kemijo in kemijsko tehnologijo Fakulteta za naravoslovje in matematiko Fakulteta za gradbeništvo, prometno inženirstvo in arhitekturo 0 0 0