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RESEARCH PRODUCT
Synthesis, characterization and magnetic properties of mixed-valence iron complexes with 2-pyridyl oximes
Carlos KremerRicardo GonzálezLorena MartínezDonatella ArmentanoFrancesc LloretRaúl ChiozzoneLivia Arizagasubject
chemistry.chemical_classificationValence (chemistry)Ketone010405 organic chemistryChemistryHydrogen bondIntermolecular forceCrystal structure010402 general chemistry01 natural sciences0104 chemical sciencesMethyl 2-pyridyl ketone oximechemistry.chemical_compoundCrystallographyMaterials ChemistryAntiferromagnetismMethanolPhysical and Theoretical Chemistrydescription
Two new mixed-valence iron complexes with 2-pyridyl oximes, [Fe(mpko)3Fe(H2O)2(NO3)](NO3)·2H2O (1) (mpko− = methyl(2-pyridyl)ketone oximate) and [{Fe(dpko)3}2Fe](ClO4)·4H2O (2) (dpko− = bis(2-pyridyl)ketone oximate), have been prepared by reaction of FeIII with mpkoH in methanol (1) and FeII with dpkoH in methanol/water (2). Dinuclear FeII(low-spin)FeIII(high-spin) and trinuclear FeII(low-spin)FeIII(high-spin)FeII(low-spin) cations are present in the crystal structure of 1 and 2, respectively. Intermolecular hydrogen bonds in 1 lead to weak antiferromagnetic interactions between pairs of neighboring FeIII centers, which allows observation of single-ion zero-field splitting effects.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2018-02-23 |