Chelated hydrazido(3-)rhenium(V) complexes: On the way to the nitridoM(V) Core (M = Tc, Re) (Articolo in rivista)

Type
Label
  • Chelated hydrazido(3-)rhenium(V) complexes: On the way to the nitridoM(V) Core (M = Tc, Re) (Articolo in rivista) (literal)
Anno
  • 2002-01-01T00:00:00+01:00 (literal)
Alternative label
  • Mevellec F.1, Lepareur N. 2, Roucoux A. 3, Noiret N. 4, Patin H. 5, Bandoli G. 6, Porchia M. 7, Tisato F.8 (2002)
    Chelated hydrazido(3-)rhenium(V) complexes: On the way to the nitridoM(V) Core (M = Tc, Re)
    in Inorganic chemistry
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Mevellec F.1, Lepareur N. 2, Roucoux A. 3, Noiret N. 4, Patin H. 5, Bandoli G. 6, Porchia M. 7, Tisato F.8 (literal)
Pagina inizio
  • 1591 (literal)
Pagina fine
  • 1597 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 41 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#descrizioneSinteticaDelProdotto
  • Studio di base sulla riduzione dello ione perrenato e introduzione del gruppo nitruro. Questa reattività è importante per capire come gli ioni perrenato e pertecnetato si riducono nei generatori 99-Mo/99m-Tc e 188W/188Re che si utilizzano negli ospedali (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 7,8 ICIS-CNR; 6,Università di Padova; 1,2,3,4,5 ENSCR - Università di Rennes, Rennes - Francia (literal)
Titolo
  • Chelated hydrazido(3-)rhenium(V) complexes: On the way to the nitridoM(V) Core (M = Tc, Re) (literal)
Abstract
  • Neutral and asymmetrical hydrazido(3-)rhenium(V) heterocomplexes of the type [Re(ƒØ2-L4)(Ln)(PPh3)] (ƒØ2-L4 = NNC(SCH3)S; H2L1 = S-methyl-ƒÒ-N-(2- hydroxyphenylethylidene)dithiocarbazate, 1, H2L2 = S-methyl-ƒÒ-N-(2- hydroxyphenylmethylidene) dithiocarbazate, 2) are prepared via ligand- exchange reactions in ethanolic solutions starting from [ReV(O)Cl4]- in the presence of PPh3, or from [ReV(O)Cl3(PPh3)2]. The distorted octahedral coordination sphere of these compounds is saturated by a chelated hydrazido group, a facially ligated ONS-Schiff base and PPh3. Reduction-substitution reactions starting from [NH4][ReVIIO4] in acidic ethanolic mixtures containing PPh3 and H2Ln (or its dithiocarbazic acid precursor H3L4) produce another example of chelated hydrazido(3-) rhenium (V) derivative, namely [ReƒnƒvƒØ2-L4)Cl2(PPh3)2] 3. On the contrary, the N- methyl substituted dithiocarbazic acid H2L3 reacts with perrhenate to give the known nitrido complex [Re(N)Cl2(PPh3)2]. Rhenium(V) complexes incorporating the robust ƒØ2-hydrazido moiety represent key intermediates helpful for the comprehension of the reaction pathway which generates nitrido-rhenium(V) species starting from oxo precursors. An essential requirement for the stabilization of such chelated hydrazido-Re(V) units is the triple deprotonation at the hydrazine nitrogens, thereby providing efficient ƒà-electron circulation in the resulting five-membered ring. The thermal stability of these units is affected by the nature of the anchoring donor, thione sulfur ensuring stronger chelation than nitrogen and oxygen. The ƒØ2-hydrazido complexes are characterized by conventional physicochemical techniques, including the X-ray crystal structure determination of 1 and 3. (literal)
Prodotto di
Autore CNR
Insieme di parole chiave

Incoming links:


Prodotto
Autore CNR di
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi
Insieme di parole chiave di
data.CNR.it