On the crystal structure and magnetism of some hybrid organic-inorganic metal organophosphonates. (Articolo in rivista)

Type
Label
  • On the crystal structure and magnetism of some hybrid organic-inorganic metal organophosphonates. (Articolo in rivista) (literal)
Anno
  • 2008-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.ica.2008.03.073 (literal)
Alternative label
  • Bellitto C., Bauer E.M., Righini G. (2008)
    On the crystal structure and magnetism of some hybrid organic-inorganic metal organophosphonates.
    in Inorganica Chimica Acta (Testo stamp.)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Bellitto C., Bauer E.M., Righini G. (literal)
Pagina inizio
  • 3785 (literal)
Pagina fine
  • 3799 (literal)
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  • Review. (literal)
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  • 361 (literal)
Rivista
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  • 15 (literal)
Note
  • ISI Web of Science (WOS) (literal)
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  • Istituto di Struttura della Materia del CNR, Sezione di Montelibretti, Area della Ricerca di Roma, Via Salaria km 29.3, I-00016 Monterotondo Stazione, Roma, Italy (literal)
Titolo
  • On the crystal structure and magnetism of some hybrid organic-inorganic metal organophosphonates. (literal)
Abstract
  • We review our recent work in the field of molecule-based magnets showing the structural and magnetic properties of a special class of hybrid organic–inorganic compounds, i.e. metal(II) organophosphonates. The synthesis, the crystal structures and, in particular, the magnetic studies of selected examples of compounds of formulas M(II)[(R–PO3)(H2O)], and M2[(O3P–R2–PO3)(2H2O)] M = Cr, Fe, Co; R = CnH2n+1, n = 1, 2, 3… and C6H5, R2 = (CH2)2 prepared in our laboratory are presented and discussed. Metal alkylphosphonates, except those of Co(II), are weak ferromagnets at low temperatures. The observed magnetic ordering temperature TN varies from 4.2 to 25 K, depending on the transition metal ions and on crystal and molecular structure. Moreover, in the case of a bifunctional molecule like aminoethylphosphonic acid, NH2(CH2)2PO3H2, or the carboxyethylphosphonic acid, HO2C(CH2)2PO3H2, is used as a ligand, then a novel Cr(II) compound of formula Cr[NH3(CH2)2PO3(Cl)(H2O)] and a microporous Fe(III) salt (NH4)[Fe2(OH){O3P(CH2)2CO2}2] are isolated. The latter are both polar and, more interesting, Cr(II) ammoniumethylphosphonate chloride results to be a weak ferromagnet below TN = 5.0 K (literal)
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