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| Description
| - Three new Prussian blue analogues, heptanuclear mixed-valence iron complexes of the type [FeII(CN)6{FeIII(1(-2H))}6]Cl2.nH2O, were synthesized and structurally and spectrally characterized, and their magnetic properties were investigated (1(-2H) = doubly deprotoned Schiff-base pentadentate ligands 1a, N,N'-bis(2-hydroxybenzylidene)-1,5-diamino-3-azapentane, 1b, N,N'-bis(3-ethoxy-2-hydroxybenzylidene)-1,7-diamino-4-azaheptane, or 1c, N,N'-bis(3-methoxy-2-hydroxybenzylidene)-1,6-diamino-3-azahexane). These compounds were formed by assembling the [Fe(CN)6](4-) building block with mononuclear complexes of the [Fe(1(-2H))Cl] type. X-ray analysis revealed that the complexes adopt a star-like architecture: the Fe(II) ion lies at the very center, and on its octahedral nodes the Fe(III) sites are coordinated in the Fe-II-C N-Fe-III manner. The Schiff-base pentadentate ligand moiety 1(-2H) coordinates a single Fe(III) center in two complexes 3b and 3c. Ligands 1a(-2H) in the complex cation of 3a adopt an unusual coordination mode: three donor atoms of the same ligand (one 0 and two N) coordinate one Fe(III), whereas the remaining N' and O' donor atoms coordinate the neighboring Fe(III) center creating the {Fe(ON2)(N'O')N '') chromophore involving two 1a(-2H) ligand moieties. Moreover, three Fe(III) centers are interconnected with three 1a(-2H) ligands in such a manner that two (Fe-3(III)(1a(-2H))(3)} units form two intramolecular rings. Magnetic investigation of the heptanuclear complexes revealed the high-spin state of all six Fe(III) coordination sites (s = 5/2), while the very central Fe(II) site is in the low-spin state (s = 0). At low temperature, the ferromagnetic exchange interactions stay evident for all three complexes. Mossbauer spectra of compounds 3a and 3b revealed a presence of two different doublets for both compounds: the major doublet is related to six Fe(III) high-spin coordination sites and the minor doublet refers to the low-spin very central Fe(II).
- Three new Prussian blue analogues, heptanuclear mixed-valence iron complexes of the type [FeII(CN)6{FeIII(1(-2H))}6]Cl2.nH2O, were synthesized and structurally and spectrally characterized, and their magnetic properties were investigated (1(-2H) = doubly deprotoned Schiff-base pentadentate ligands 1a, N,N'-bis(2-hydroxybenzylidene)-1,5-diamino-3-azapentane, 1b, N,N'-bis(3-ethoxy-2-hydroxybenzylidene)-1,7-diamino-4-azaheptane, or 1c, N,N'-bis(3-methoxy-2-hydroxybenzylidene)-1,6-diamino-3-azahexane). These compounds were formed by assembling the [Fe(CN)6](4-) building block with mononuclear complexes of the [Fe(1(-2H))Cl] type. X-ray analysis revealed that the complexes adopt a star-like architecture: the Fe(II) ion lies at the very center, and on its octahedral nodes the Fe(III) sites are coordinated in the Fe-II-C N-Fe-III manner. The Schiff-base pentadentate ligand moiety 1(-2H) coordinates a single Fe(III) center in two complexes 3b and 3c. Ligands 1a(-2H) in the complex cation of 3a adopt an unusual coordination mode: three donor atoms of the same ligand (one 0 and two N) coordinate one Fe(III), whereas the remaining N' and O' donor atoms coordinate the neighboring Fe(III) center creating the {Fe(ON2)(N'O')N '') chromophore involving two 1a(-2H) ligand moieties. Moreover, three Fe(III) centers are interconnected with three 1a(-2H) ligands in such a manner that two (Fe-3(III)(1a(-2H))(3)} units form two intramolecular rings. Magnetic investigation of the heptanuclear complexes revealed the high-spin state of all six Fe(III) coordination sites (s = 5/2), while the very central Fe(II) site is in the low-spin state (s = 0). At low temperature, the ferromagnetic exchange interactions stay evident for all three complexes. Mossbauer spectra of compounds 3a and 3b revealed a presence of two different doublets for both compounds: the major doublet is related to six Fe(III) high-spin coordination sites and the minor doublet refers to the low-spin very central Fe(II). (en)
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| Title
| - Mixed-Valence Heptanuclear Iron Complexes with Ferromagnetic Interaction
- Mixed-Valence Heptanuclear Iron Complexes with Ferromagnetic Interaction (en)
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| skos:prefLabel
| - Mixed-Valence Heptanuclear Iron Complexes with Ferromagnetic Interaction
- Mixed-Valence Heptanuclear Iron Complexes with Ferromagnetic Interaction (en)
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| skos:notation
| - RIV/61989592:15310/12:33140843!RIV13-MSM-15310___
|
| http://linked.open...avai/riv/aktivita
| |
| http://linked.open...avai/riv/aktivity
| - P(ED2.1.00/03.0058), P(EE2.3.20.0017), P(GAP207/11/0841), P(KAN115600801)
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| http://linked.open...iv/cisloPeriodika
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| http://linked.open...vai/riv/dodaniDat
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| http://linked.open...aciTvurceVysledku
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| http://linked.open.../riv/druhVysledku
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| http://linked.open...iv/duvernostUdaju
| |
| http://linked.open...titaPredkladatele
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| http://linked.open...dnocenehoVysledku
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| http://linked.open...ai/riv/idVysledku
| - RIV/61989592:15310/12:33140843
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| http://linked.open...riv/jazykVysledku
| |
| http://linked.open.../riv/klicovaSlova
| - network structures; bimetallic assemblies; photoinduced magnetization; building-blocks; spin-crossover; crystal-structure; Prussian blue analog; single-molecule magnets (en)
|
| http://linked.open.../riv/klicoveSlovo
| |
| http://linked.open...odStatuVydavatele
| - US - Spojené státy americké
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| http://linked.open...ontrolniKodProRIV
| |
| http://linked.open...i/riv/nazevZdroje
| |
| http://linked.open...in/vavai/riv/obor
| |
| http://linked.open...ichTvurcuVysledku
| |
| http://linked.open...cetTvurcuVysledku
| |
| http://linked.open...vavai/riv/projekt
| |
| http://linked.open...UplatneniVysledku
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| http://linked.open...v/svazekPeriodika
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| http://linked.open...iv/tvurceVysledku
| - Herchel, Radovan
- Moncol, Jan
- Nemec, Ivan
- Boca, Roman
- Ruben, Mario
- Salitros, Ivan
- Renz, Franz
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| http://linked.open...ain/vavai/riv/wos
| |
| issn
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| number of pages
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| http://bibframe.org/vocab/doi
| |
| http://localhost/t...ganizacniJednotka
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