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Hye Jin Shin,장윤정,Hikaru Zenno,Shinya Hayami,민길식 한국공업화학회 2022 Journal of Industrial and Engineering Chemistry Vol.110 No.-
Five polynuclear iron(III) complexes, [(pmidp)Fe(NCSe)]2 (1), [(pmidp)Fe(NCBH3)]2 (2), [(Hpmidp/pmidp)Fe3(CH3O)2(NCS)4]∙H2O (3), [(pmidp)2Fe6(CH3O)4(N3)4(CH3COO)2O2] (4), and[(pmidp)2Fe6(CH3O)4(NCO)4(CH3COO)2O2]∙2MeOH (5) were isolated through the reactions of N-(2-pyridylmethyl)iminodipropanol (H2pmidp) and iron(III) ions with different pseudohalide ions. The complexeswere studied via X-ray crystal diffraction, Mössbauer spectra, and magnetochemistry. The molecularstructures of 1 and 2 were formed as the {Fe2(m2-Opropoxo)2}2+ cores with pmidp2 and NCSe/NCBH3.The structure of 3 was formed as a {Fe3(m2-OCH3)2(m2-Opropoxo)4}5+ core with Hpmidp/pmidp2 andNCS. The structures of 4 and 5 were formed as {Fe6(m4-O)2(m2-OCH3)2(g2-OAc)2(m2-Opropoxo)4} cores withpmidp2 and NCO/N3. Structural analyses revealed that the formation of various multinuclear iron(III)moieties depends on the auxiliary ligands. The oxidation states of all the complexes were confirmedas + 3 using the bond valence sum (BVS) calculations and Mössbauer spectral data. The susceptibility datafor 1–5 fitted using each spin coupling (J) model indicated that 1–3 showed antiferromagnetic exchangeinteractions, and 4 and 5 showed the ferromagnetic and antiferromagnetic couplings, simultaneously.