NEUTRAL OXO AND NITRIDO COMPLEXES OF TECHNETIUM(V) AND RHENIUM(V) WITH AN UNSATURATED TETRADENTATE (N2S2) LIGAND - CRYSTAL-STRUCTURE OF [N,N'-ETHYLENEBIS(THIOACETYL-ACETONYLIDENEIMINATO)(2-)-S,S',N,N']NITRIDOTECHNETIUM(V) (Articolo in rivista)

Type
Label
  • NEUTRAL OXO AND NITRIDO COMPLEXES OF TECHNETIUM(V) AND RHENIUM(V) WITH AN UNSATURATED TETRADENTATE (N2S2) LIGAND - CRYSTAL-STRUCTURE OF [N,N'-ETHYLENEBIS(THIOACETYL-ACETONYLIDENEIMINATO)(2-)-S,S',N,N']NITRIDOTECHNETIUM(V) (Articolo in rivista) (literal)
Anno
  • 1991-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1039/DT9910001301 (literal)
Alternative label
  • Tisato F.; Mazzi U.; Bandoli G.; Cros G.; Darbieu M.; Coulais Y.; Guiraud R. (1991)
    NEUTRAL OXO AND NITRIDO COMPLEXES OF TECHNETIUM(V) AND RHENIUM(V) WITH AN UNSATURATED TETRADENTATE (N2S2) LIGAND - CRYSTAL-STRUCTURE OF [N,N'-ETHYLENEBIS(THIOACETYL-ACETONYLIDENEIMINATO)(2-)-S,S',N,N']NITRIDOTECHNETIUM(V)
    in Journal of the Chemical Society. Dalton transactions (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Tisato F.; Mazzi U.; Bandoli G.; Cros G.; Darbieu M.; Coulais Y.; Guiraud R. (literal)
Pagina inizio
  • 1301 (literal)
Pagina fine
  • 1307 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://pubs.rsc.org/en/Content/ArticleLanding/1991/DT/dt9910001301 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 8 (literal)
Note
  • ISI Web of Science (WOS) (literal)
  • Scopu (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 1 : Istituto di Chimica e Tecnologia dei Radioelementi del CNR, Area della Ricerca, Corso Stati Uniti 4, 35020 Padova, Italy / 2-3 : Dipartimento di Scienze Farmaceutiche, Universita di Padova, Via Marzolo 5, 35131 Padova, Italy / 4-7 : Laboratoire de Chimie de Coordination du CNRS, UP 8241 liée par conventions à l'Université Paul Sabatier, l'Institut National Polytechnique, 205 route de Narbonne, 31077 Toulouse Cedex, France (literal)
Titolo
  • NEUTRAL OXO AND NITRIDO COMPLEXES OF TECHNETIUM(V) AND RHENIUM(V) WITH AN UNSATURATED TETRADENTATE (N2S2) LIGAND - CRYSTAL-STRUCTURE OF [N,N'-ETHYLENEBIS(THIOACETYL-ACETONYLIDENEIMINATO)(2-)-S,S',N,N']NITRIDOTECHNETIUM(V) (literal)
Abstract
  • Ligand-exchange reactions of the tetradentate unsaturated N2S2 Schiff-base ligand N,N'-ethylenebis-(thioacetylacetonylideneimine) (H2L) with labile monooxo-technetium(v) and -rhenium(v) compounds ([NBu4][TcOCl4]; [NBu4][ReOCl4] or [ReOCl3(PPh3)2]) gave two types of neutral six-co-ordinated species [MO(L)Cl] and [{MO(L)}2O] (M = Tc or Re). The monooxo monomeric complexes rearrange to the mu-oxo dimeric species via a charged labile intermediate in wet organic solvents or when solutions are kept in contact with air. Reaction of H2L with [NBu4][Tc(VI)NCl4] follows a reduction-substitution route to give another neutral, but five-co-ordinated species, [TcN(L)] which contains the [Tc(V) = N]2+ nitrido core. All complexes have been characterized by means of standard spectroscopic techniques. The influence of the metal on ligand H-1 NMR chemical shifts is discussed. The technetium centre shifts all the ligand protons more downfield than does rhenium. This behaviour is in general agreement with the stronger acidity of the [TcO]3+ core with respect to [ReO]3+. The five-co-ordination of the nitrido complex [TcN(L)] is confirmed by its X-ray structure determination: monoclinic, space group P2(1)/n, a = 14.654(7), b = 12.62(5), c = 7.819(4) angstrom, beta = 92.60(3)-degrees and Z = 4. The co-ordination sphere around the Tc centre is nearly square pyramidal with an apical multiply bonded nitrogen atom [Tc = N 1.621(8) angstrom]. (literal)
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