Europium(II1) and gadolinium(II1) hexafluoroacetylacetonates, M(hfac),, form stable bis adducts with nitronyl nitroxides (2- R-4,4,5,5-tetramethyl-4,5-dihyd1rHo-- imidazolyl-1-oxy13 -oxide, NITR; R = phenyl, ethyl). The magnetic properties of Gd- (hfac),(NITPh), were investigated in the range 1.1-300 K, while all the other compounds were studied in the range 4-300 K. The gadolinium(II1) ions were found to be weakly coupled in a ferromagnetic fashion to the radical, while the radicals are antiferromagnetically coupled to each other. The possible mechanisms responsible for this behavior are discussed.
Magnetic properties of lanthanide complexes with nitronyl nitroxides / C. Benelli;A. Caneschi;D. Gatteschi;L. Pardi;P. Rey;D. P. Shum;R. L. Carlin. - In: INORGANIC CHEMISTRY. - ISSN 0020-1669. - STAMPA. - 28:(1989), pp. 272-275. [10.1021/ic00301a023]
Magnetic properties of lanthanide complexes with nitronyl nitroxides.
BENELLI, CRISTIANO;CANESCHI, ANDREA;GATTESCHI, DANTE;PARDI, LEO;
1989
Abstract
Europium(II1) and gadolinium(II1) hexafluoroacetylacetonates, M(hfac),, form stable bis adducts with nitronyl nitroxides (2- R-4,4,5,5-tetramethyl-4,5-dihyd1rHo-- imidazolyl-1-oxy13 -oxide, NITR; R = phenyl, ethyl). The magnetic properties of Gd- (hfac),(NITPh), were investigated in the range 1.1-300 K, while all the other compounds were studied in the range 4-300 K. The gadolinium(II1) ions were found to be weakly coupled in a ferromagnetic fashion to the radical, while the radicals are antiferromagnetically coupled to each other. The possible mechanisms responsible for this behavior are discussed.
| File | Dimensione | Formato | |
|---|---|---|---|
|
ic00301a023.pdf
Accesso chiuso
Tipologia:
Versione finale referata (Postprint, Accepted manuscript)
Licenza:
Tutti i diritti riservati
Dimensione
524.14 kB
Formato
Adobe PDF
|
524.14 kB | Adobe PDF | Richiedi una copia |
I documenti in FLORE sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
