Gd(hfac),NITiPr (hfac = hexafluoroacetylacetonate;N ITiPr = 2-isopropyl-4,4,5,5-tetramethyl-4,5-dihy1rH o--i midazolyl-l- oxy1 3-oxide) crystallizes in the monoclinic space group P 2 , / n with cell parameters a = 11.916 (1) A, b = 17.625 ( 9 ) A, c = 18.055 ( I ) A, j3 = 96.98 (I)’, V = 3763.82 A’, and Z = 4. The structure refinement converged to R = 0.086. The molecular structure of the complex consists of linear chains made up by gadolinium(II1) ions bridged by nitronyl nitroxide radicals. The magnetic properties of this compound and of other structurally strictly related lanthanide nitronyl nitroxide complexes are discussed according to a model in which the next-nearest-neighbor interactions are explicitly taken into account. For appropriate values of the exchange parameters the ground state corresponds to a two-spins-up, two-spins-down configuration, which justifies the low effective magnetic moment observed at low temperature

Linear-chain gadolinium(III) nitronyl nitroxide complexes with dominant next-nearest-neighbor magnetic interactions / Benelli, Cristiano; Caneschi, Andrea; Gatteschi, Dante; Luca, Pardi; Paul, Rey. - In: INORGANIC CHEMISTRY. - ISSN 0020-1669. - STAMPA. - 29:(1990), pp. 4223-4228. [10.1021/ic00346a013]

Linear-chain gadolinium(III) nitronyl nitroxide complexes with dominant next-nearest-neighbor magnetic interactions

BENELLI, CRISTIANO;CANESCHI, ANDREA;GATTESCHI, DANTE;
1990

Abstract

Gd(hfac),NITiPr (hfac = hexafluoroacetylacetonate;N ITiPr = 2-isopropyl-4,4,5,5-tetramethyl-4,5-dihy1rH o--i midazolyl-l- oxy1 3-oxide) crystallizes in the monoclinic space group P 2 , / n with cell parameters a = 11.916 (1) A, b = 17.625 ( 9 ) A, c = 18.055 ( I ) A, j3 = 96.98 (I)’, V = 3763.82 A’, and Z = 4. The structure refinement converged to R = 0.086. The molecular structure of the complex consists of linear chains made up by gadolinium(II1) ions bridged by nitronyl nitroxide radicals. The magnetic properties of this compound and of other structurally strictly related lanthanide nitronyl nitroxide complexes are discussed according to a model in which the next-nearest-neighbor interactions are explicitly taken into account. For appropriate values of the exchange parameters the ground state corresponds to a two-spins-up, two-spins-down configuration, which justifies the low effective magnetic moment observed at low temperature
1990
29
4223
4228
Benelli, Cristiano; Caneschi, Andrea; Gatteschi, Dante; Luca, Pardi; Paul, Rey
File in questo prodotto:
File Dimensione Formato  
ic00346a013.pdf

Accesso chiuso

Tipologia: Versione finale referata (Postprint, Accepted manuscript)
Licenza: Tutti i diritti riservati
Dimensione 782.37 kB
Formato Adobe PDF
782.37 kB Adobe PDF   Richiedi una copia

I documenti in FLORE sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/647808
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 166
  • ???jsp.display-item.citation.isi??? 164
social impact