Octanuclear [Ni(4)(II)Ln(4)(III)] complexes. Synthesis, crystal structures and magnetocaloric properties (Articolo in rivista)

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  • Octanuclear [Ni(4)(II)Ln(4)(III)] complexes. Synthesis, crystal structures and magnetocaloric properties (Articolo in rivista) (literal)
Anno
  • 2014-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1039/c4dt00515e (literal)
Alternative label
  • T.D. Pasatoiu [ 1 ] ; Ghirri A. [ 2,3 ] ; Madalan A.M. [ 1 ] ; Affronte M. [ 2,3 ] ; Andruh M. [ 1 ] (2014)
    Octanuclear [Ni(4)(II)Ln(4)(III)] complexes. Synthesis, crystal structures and magnetocaloric properties
    in Dalton transactions (2003. Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • T.D. Pasatoiu [ 1 ] ; Ghirri A. [ 2,3 ] ; Madalan A.M. [ 1 ] ; Affronte M. [ 2,3 ] ; Andruh M. [ 1 ] (literal)
Pagina inizio
  • 9136 (literal)
Pagina fine
  • 9142 (literal)
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  • 43 (literal)
Rivista
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  • 7 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 24 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • [ 1 ] Univ Bucharest, Fac Chem, Inorgan Chem Lab, Bucharest 020464, Romania [ 2 ] Univ Modena & Reggio Emilia, CNR Inst NanoSci S3, I-41100 Modena, Italy [ 3 ] Univ Modena & Reggio Emilia, Dipartimento Sci Fis Informat & Matemat, I-41100 Modena, Italy (literal)
Titolo
  • Octanuclear [Ni(4)(II)Ln(4)(III)] complexes. Synthesis, crystal structures and magnetocaloric properties (literal)
Abstract
  • Two original heterooctanuclear [Ni(4)(II)Ln(4)(III)] complexes (Ln(III) = Sm-III, Gd-III) have been obtained starting from the [Ni-II(valpn)(H2O)(2)] mononuclear precursor [H(2)valpn = 1,3-propanediylbis(2-iminomethylene-6-methoxy-phenol)] and the corresponding lanthanide nitrates, in the presence of azide anions, through slow capture of atmospheric CO2. Three weak and competitive exchange interactions, J(GdGd), J(GdNi), J(NiNi), make the ground state of this magnetic system degenerate at cryogenic temperature and zero field. This, along with the high spin of Gd-III, lead to a significant magnetocaloric effect spread in the temperature range 1 to 20 K (Delta S-m[0-7 T, 3.5 K] = 19 J kg(-1) K-1). (literal)
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