Magnetism of Manganese Complexes with Fluorinated Benzimidazole-Substituted Nitronyl Nitroxides

A series of layered compounds of the formula {[Mn2(radical)3](ClO4)}n was obtained by a reaction (in methanol) of manganese(II) acetate with 2-(2-benzimidazolyl)-4,4,5,5-tetramethylimidazolidinyl-1-oxy-3-oxides fluorinated on the benzene ring and by successive addition of sodium perchlorate. This st...

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Vydáno v:Inorganics Ročník 12; číslo 12; s. 323
Hlavní autoři: Tretyakov, Evgeny, Bakuleva, Nadejda, Efimov, Nikolay, Kulikova, Elizaveta, Luneau, Dominique
Médium: Journal Article
Jazyk:angličtina
Vydáno: Basel MDPI AG 01.12.2024
Témata:
Acetic acid
Atomic properties
Benzene
Benzimidazoles
Chemical elements
Chemical Sciences
Crystal structure
Curie temperature
Fluorination
Fluorine
Fluorine compounds
Free radicals
Free radicals (Chemistry)
heterospin complexes
layered compounds
Ligands
Magnetic fields
Magnetic properties
Magnetism
Manganese
manganese(II)
Methanol
molecular magnetism
nitronyl nitroxides
Perchloric acid
Sodium perchlorate
Substitutes
Temperature
ISSN:2304-6740, 2304-6740
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Popis
Shrnutí:A series of layered compounds of the formula {[Mn2(radical)3](ClO4)}n was obtained by a reaction (in methanol) of manganese(II) acetate with 2-(2-benzimidazolyl)-4,4,5,5-tetramethylimidazolidinyl-1-oxy-3-oxides fluorinated on the benzene ring and by successive addition of sodium perchlorate. This study showed that the magnetic properties of the complexes are sensitive to the number and arrangement of fluorine atoms in the paramagnetic ligands. It was found that the heterospin complex with 4-FBzIm-NN behaves as a magnet with Curie temperature TC = 50 K, which is close to that of the {[Mn2(BzIm-NN)3](ClO4)}n complex containing a nonfluorinated ligand. Meanwhile, no 3D ordering was noted for complexes with difluorinated and 5-fluoro-substituted ligands.
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ISSN:2304-6740
2304-6740
DOI:10.3390/inorganics12120323