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 SM ISO690:2012GORINCHOY, Viorina, ZUBAREVA, Vera, SHOVA, Sergiu, SHAFRANSKY, V., LIPKOWSKI, Janusz, STANICA, Nicolae, SIMONOV, Yurii A., TURTA, Constantin. Homo- and heteronuclear iron complexes {Fe2MO} with salicylic acid: Synthesis, structures, and physicochemical properties. In: Russian Journal of Coordination Chemistry/Koordinatsionnaya Khimiya, 2009, vol. 35, pp. 731-739. ISSN -. DOI: https://doi.org/10.1134/S1070328409100042 |
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  Russian Journal of Coordination Chemistry/Koordinatsionnaya Khimiya |
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| Volumul 35 / 2009 / ISSN - /ISSNe 1070-3284 | |
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| DOI:https://doi.org/10.1134/S1070328409100042 | |
| Pag. 731-739 | |
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A reaction of iron nitrate with magnesium salicylate and reactions of iron and cobalt chlorides with ammonium salicylate in the presence of water, methanol, DMAA, and DMF gave the trinuclear heterometallic complexes: [hexa-μ-salicylato-μ3-oxo-0.4-dimethylacetamide-2. 6-aquadiiron(III)magnesium(II)] tetra(dimethylacetamide), [Fe 2MgO(SalH)6(DMAA)0.4(H2O) 2.6]•4DMAA (I); [hexa-μ]-salicylato-μ3- oxo(dimethanol)aquadiiron(III)cobalt(II)] dimethylformamide • 2.5-hydrate, [Fe2CoO(SalH)6(CH3OH)2(H 2O)] • DMF • 2.5H2O (II); and [hexa-μ-salicylato-μ3-oxotriaquatriiron(III)] chloride dimethylacetamide monohydrate, [Fe3O(SalH)6(H 2O)3]Cl • DMAA • H2O (III). The X-ray study revealed that the molecular structures of complexes I and II are [Fe 2 IIIMII(μ3-O)(RCOO) 6L3] • nSolv. The IR and Mössbauer spectra of complexes I-III were examined; their magnetochemical and thermal properties were studied. The parameters of the Mössbauer spectra (δNa + = 0.69 ± 0.03 mm/s, ΔE Q = 0.76-1.08 mm/s, 300 K) suggest the high-spin state of the Fe3+ ions in complexes I-III (S = 5/2). The paramagnetic Fe3+ ions are involved in antiferromagnetic exchange interactions with the parameter J = -44 cm -1, g = 2.05 (for I). Complexes I-III are thermally unstable. |
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| Cuvinte-cheie Engineering controlled terms Ammonium compounds, Antiferromagnetic materials, Antiferromagnetism, Chlorine compounds, cobalt, Dimethylformamide, Hydrates, Iron compounds, magnesium, methanol, molybdenum, Molybdenum compounds, Spin dynamics, Thermodynamic properties Engineering uncontrolled terms Antiferromagnetic exchange interactions, Cobalt chlorides, Dimethylacetamide, heterometallic complexes, Heteronuclear, High spin state, iron complex, Iron nitrates, Physicochemical property, Presence of water, Salicylic acids, thermal properties, Thermally unstable, X-ray studies Engineering main heading Cobalt compounds |
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