20.500.12556/RUL-161611 Synthesis and characterization of catalytically active Ni(II) complexes with bis(phenol)diamine ligands A novel N,N’-dimethylethylenediamine derivative of substituted bis(phenol)diamine ligands, namely 2-(tert-butyl)-4-methylphenol in H$_2$L$^1$, was synthesized by a convenient green procedure. Nickel)II) complex [NiL$^1$] 1 has been synthesized and characterized by various methods along with crystal structure determined. Ni(II) coordination center in a mononuclear complex is surrounded by two phenolate oxygen atoms and two amine nitrogen atoms of the ligand in a square planar arrangement. The magnetic susceptibility of the title complex indicates a paramagnetic behavior above 150 K, while strong ferromagnetism below 100 K. Furthermore, the cyclic voltammetry studies show two ligand-centered oxidation of the phenolate groups to phenoxyl radical and the metal-centered reduction of Ni(II) to Ni(0). The Glaser coupling reaction of phenylacetylene was also studied. A strong catalytic activity at room T in THF solvent is observed for 1 in the presence of zinc powder as a reducing agent. A full conversion rate was achieved after 7 h at 25 °C. The DFT analysis corroborates with the square-planar NiO$_2$N$_2$ chromophore of 1 being reduced in catalytically active Ni(0) by applied Zn. The calculated Gibbs free energy of the reaction leading to the formation of the substrate Ni-complex is favorable endothermic. Most of the data for 1 were obtained also for the very similar previously reported [NiL$^2$] 2, with 2,4- di tert-butylphenol in H$_2$L$^2$, which were than compared. bisphenoldiamine nickel complexes Glaser reaction coupling of phenylacetylene ferromagnetism green procedure bisfenoldiamini nikljevi kompleksi Glaserjeva reakcija sklopitev fenilacetilena feromagnetizem zeleni postopek true false true Angleški jezik Slovenski jezik Članek v reviji 2024-09-12 14:17:30 2024-09-12 14:17:31 2025-07-03 16:01:07 0000-00-00 00:00:00 2025 0 0 8 str. Vol. 574, art. 122353 1 Jan. 2025 0000-00-00 PostprintKoncna Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 2027-01-01 546.742:547.415.1 0020-1693 10.1016/j.ica.2024.122353 207250179 RAZ_Jafari_Zahra_2025.pdf RAZ_Jafari_Zahra_2025.pdf 1 FB793CB7129D52489D718AFA66491FDD 67ebbdaa47f1a7108e618a7ce30c507c50852b4635f8d9aeeda645c462bf4f4f 218c559e-7106-11ef-b232-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=190590 https://www.sciencedirect.com/science/article/pii/S0020169324004444 1 ee4ab324-7100-11ef-b232-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=190576 Fakulteta za kemijo in kemijsko tehnologijo Fakulteta za gradbeništvo in geodezijo 0 0 0