Mono-, homo- and hetero-dinuclear lanthanide(III) complexes with new acyclic compartmental schiff bases (Articolo in rivista)

Type
Label
  • Mono-, homo- and hetero-dinuclear lanthanide(III) complexes with new acyclic compartmental schiff bases (Articolo in rivista) (literal)
Anno
  • 1991-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/S0020-1693(00)80384-9 (literal)
Alternative label
  • Guerriero P.; Tamburini S.; Vigato P.A.; Benelli C. (1991)
    Mono-, homo- and hetero-dinuclear lanthanide(III) complexes with new acyclic compartmental schiff bases
    in Inorganica Chimica Acta (Testo stamp.); Elsevier, Amsterdam (Paesi Bassi)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Guerriero P.; Tamburini S.; Vigato P.A.; Benelli C. (literal)
Pagina inizio
  • 19 (literal)
Pagina fine
  • 27 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://www.sciencedirect.com/science/article/pii/S0020169300803849 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 189 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 9 (literal)
Note
  • Scopu (literal)
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 1-3 : Istituto di Chimica, Tecnologia dei Radioelementi CNR - Area della Ricerca, C.so Stati Uniti 4, Padua, 35020, Italy 4 : Dipartimento di Chimica, Università di Firenze, via Maragliano 75, Florence, Italy (literal)
Titolo
  • Mono-, homo- and hetero-dinuclear lanthanide(III) complexes with new acyclic compartmental schiff bases (literal)
Abstract
  • A series of homo-dinuclear lanthanide(III) complexes of the type: Ln2(LA)(X)2·.n(H2O) and Ln2(LB)(X)2·.n(H2O) (H4LA and H4LB are the Schiff bases obtained by condensation of 3-formylsalicylic acid and 4-N-dodecyldiethylenetriamine or 1,5-diamino-3-azapentane, respectively; X=NO3-, Cl-; n= 3-8;) has been prepared and characterized. The synthesis of mono- and hetero-dinuclear complexes failed. On the contrary, mono-, homo- and hetero-dinuclear lanthanide(III) complexes, Ln(H4LC(NO3)3·nS, Ln(H4LD)(NO3)3·nS or La(H4LE)(NO3)3·4H2O, Ln2(LC)(NO3)2·nS, Ln2(LD)(NO3)2·nS or La2(LE)(NO3)2·4H2O, Ln1?Ln2(LC)(NO3)2·nS or Ln1?Ln2(LD)(NO3)2·nS (n=1-3; S?H2O, CH3OH), respectively, have been prepared by using the ligands H4LC, H4LD and H4LE, which are the Schiff bases derived by condensation of 2,3-dihydroxybenzaldehyde with 1,5-diamino-3-azapentane, 1,5-diamino-3-thiapentane or 4-N-dodecyldiethylenetriamine, respectively. The metal/metal ratio and the homogeneity of the hetero-dinuclear complexes have been evaluated also by electron microscopy together with X-ray fluorescence microprobe. The physicochemical properties of the prepared complexes have been compared with those of similar macrocyclic complexes. The magnetic behaviour of the complex Gd2(LA)(NO3)2·4H2O has revealed a decrease in the effective magnetic moment from 10.97 ?B at room temperature to 7.96 ?B at 4.2 K, and an antiferromagnetic coupling constant J=0.211(4) cm-1. A superexchange mechanism through the bridging atoms has been proposed. (literal)
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