From compounds to materials: heterodinuclear complexes as precursors in the synthesis of mixed oxides; crystal structures of [Cu(H2LA)] and [{CuY(LA)(NO3)(dmso)}2]·2dmso [H4LA=N,N?-ethylenebis(3-hydroxysalicylideneimine), dmso = dimethyl sulphoxide] (Articolo in rivista)

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  • From compounds to materials: heterodinuclear complexes as precursors in the synthesis of mixed oxides; crystal structures of [Cu(H2LA)] and [{CuY(LA)(NO3)(dmso)}2]·2dmso [H4LA=N,N?-ethylenebis(3-hydroxysalicylideneimine), dmso = dimethyl sulphoxide] (Articolo in rivista) (literal)
Anno
  • 1991-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1039/DT9910002145 (literal)
Alternative label
  • Casellato U.;Guerriero P.; Tamburini S.; Sitran S.; Vigato P.A. (1991)
    From compounds to materials: heterodinuclear complexes as precursors in the synthesis of mixed oxides; crystal structures of [Cu(H2LA)] and [{CuY(LA)(NO3)(dmso)}2]·2dmso [H4LA=N,N?-ethylenebis(3-hydroxysalicylideneimine), dmso = dimethyl sulphoxide]
    in Journal of the Chemical Society. Dalton transactions (Print); Royal Society of Chemistry, London (Italia)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Casellato U.;Guerriero P.; Tamburini S.; Sitran S.; Vigato P.A. (literal)
Pagina inizio
  • 2145 (literal)
Pagina fine
  • 2152 (literal)
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  • http://pubs.rsc.org/en/Content/ArticleLanding/1991/DT/dt9910002145 (literal)
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  • 8 (literal)
Rivista
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  • 8 (literal)
Note
  • ISI Web of Science (WOS) (literal)
  • Scopu (literal)
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  • lstituto di Chimica e Tecnologia dei Radioelementi CNR, C.so Stati Uniti, 4-35020 Padova, Italy (literal)
Titolo
  • From compounds to materials: heterodinuclear complexes as precursors in the synthesis of mixed oxides; crystal structures of [Cu(H2LA)] and [{CuY(LA)(NO3)(dmso)}2]·2dmso [H4LA=N,N?-ethylenebis(3-hydroxysalicylideneimine), dmso = dimethyl sulphoxide] (literal)
Abstract
  • Mononuclear copper(II) and nickel(II) complexes [M(H2LA)] have been obtained by reaction of the appropriate metal acetate with the potentially hexadentate compartmental ligand H4LA, prepared by condensation of 2,3-dihydroxybenzaldehyde with ethylenediamine. Physicochemical data suggest the metal ion is in the inner N2O2 compartment. An X-ray investigation on [Cu(H2LA)] showed that the crystals are orthorhombic, space group Pnca, with a= 19.381(5), b= 15.327(4), c= 10.158(4)Å for Z= 8 and confirms the inner occupancy of copper(II) which exhibits an almost square-planar configuration. The bond lengths to CuII[Cu-N 1.93(1), Cu-O 1.89(1)Å(mean)] are within the usual range. The complexes [M(H2LA)] act as ligands in the formation of heterodinuclear [M1M2LA(X)(solv)n](M1= Cu or Ni, M2= La or Y, X = NO3 or Cl) or [M1M2LA(solv)n](M = Cu or Ni, M2= UO2 or Ba) species [solv = H2O, methanol or dimethyl sulphoxide (dmso)]. Crystals of [{CuY(LA)(NO3)(dmso)}2]·2dmso, grown from dmso-MeOH are triclinic, space group P[1 with combining macron], with a= 9.919(5), b= 11.357(5), c= 13.789(6)Å for Z= 1 (the asymmetric unit is half of the molecule). The X-ray structure shows that the copper(II) is four-co-ordinated in the inner N2O2 compartment while the yttrium(III) is eight-co-ordinated in the outer O2O2. The complex is a tetranuclear asymmetric unit, two yttrium(III) ions being held together by phenolic oxygen bridges. The Y-O(ligand) bonds are in the range 2.28-2.40 Å, Y-O(dmso) is 2.31(1)Å and Y-O(nitrate) are 2.48 Å(mean). The Cu Y and Y Y distances are 3.397(3) and 3.781(2)Å respectively. The co-ordination of each yttrium(III) ion is completed by the oxygens of a bidentate nitrate ion and a dmso molecule. The geometry around the metal ion can be described as pentagonal bipyramidal. Two dmso molecules are present in the cell as clathrate solvent. The thermal decomposition of copper(II)-yttrium(III) and -lanthanum(III) complexes and the consequent formation of mixed oxides have also been studied and the preliminary results are reported. (literal)
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