Abstract
Four new trinuclear heterometallic molecular complexes with the {FeIII2MII μ3-O} core, where M = Mn(II), Ni(II), Cu(II) and Zn(II), have been synthesized by the reaction between iron nitrate and d-metal salts with ammonium salicylate in a mixture of solvents. The compounds were obtained as crystalline material suitable for single-crystal structure analysis with the following composition: [Fe2MnO(SalH)6(EtOH)(MeOH)2]·DMAA·EtOH·2MeOH·H2O (1); [Fe2NiO(SalH)6(EtOH)(MeOH)2]⋅DMAA⋅2MeOH⋅1.5H2O (2); [Fe2CuO(SalH)6(EtOH)(MeOH)2]⋅DMAA⋅4H2O (3); [Fe2ZnO(SalH)6(EtOH)(MeOH)2]⋅DMF⋅2MeOH⋅1.5H2O (4), where SalH = monodeprotonated salicylic ligand. The elemental analysis and IR spectra of the complexes 1–4 are in good agreement with the crystallographic data. The Mössbauer parameters are characteristic to iron(III) complexes with a spin value of S = 5/2. The thermal properties of all compounds have been studied in air and nitrogen atmosphere at the 20–1000 °C temperature range. The thermal analysis data revealed that after the elimination of external solvent molecules, the trinuclear core of the complexes is stable up to 250 °C.
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This work was realized under the supervision of Prof. Constantin TURTA (20.12.1940–23.03.2015).
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Gorinchoy, V., Cuzan-Munteanu, O., Petuhov, O. et al. Thermal analysis, synthesis and structural studies of heterometallic {Fe2MO} salicylate complexes. J Therm Anal Calorim 138, 2623–2633 (2019). https://doi.org/10.1007/s10973-019-08642-6
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DOI: https://doi.org/10.1007/s10973-019-08642-6