Ligand driven geometry switch in octahedral and trigonal bipyramidal iron complexes containing (H)PNO and PNN ligands (Articolo in rivista)

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Label
  • Ligand driven geometry switch in octahedral and trigonal bipyramidal iron complexes containing (H)PNO and PNN ligands (Articolo in rivista) (literal)
Anno
  • 2007-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1002/ejic.200600731 (literal)
Alternative label
  • Pelagatti, Paolo; Bacchi, Alessia; Balordi, Marcella; Caneschi, Andrea; Giannetto, Marco; Pelizzi, Corrado; Gonsalvi, Luca; Peruzzini, Maurizio; Ugozzoli, Franco (2007)
    Ligand driven geometry switch in octahedral and trigonal bipyramidal iron complexes containing (H)PNO and PNN ligands
    in European journal of inorganic chemistry (Print); WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim (Germania)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Pelagatti, Paolo; Bacchi, Alessia; Balordi, Marcella; Caneschi, Andrea; Giannetto, Marco; Pelizzi, Corrado; Gonsalvi, Luca; Peruzzini, Maurizio; Ugozzoli, Franco (literal)
Pagina inizio
  • 162 (literal)
Pagina fine
  • 171 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • ICCOM-CNR; Universita' di Parma (literal)
Titolo
  • Ligand driven geometry switch in octahedral and trigonal bipyramidal iron complexes containing (H)PNO and PNN ligands (literal)
Abstract
  • Complexation reactions of FeII and FeIII salts with the tridentate ligands 2-(diphenylphosphanyl)benzaldehyde benzoylhydrazone [(H)PNO] and N-[2-(diphenylphosphanyl)benzylidene]-2-(2-pyridyl)ethanamine (PNN) was carried out. For (H)PNO, reaction of a stoichiometric amount of anhydrous FeCl2 in the presence of a primary alcohol such as MeOH, EtOH or nBuOH gave the mixed-valence FeII/FeIII paramagnetic complex [Fe{?3-(H)PNO}2]Cl[FeCl4], whereas the reaction between FeCl2 and a twofold excess of (H)PNO in the presence of AgOTf (OTf = triflate, OSO2CF3) led to the isolation of the bis-chelate paramagnetic ferrous complex [Fe{?3-(H)PNO}2][OTf]2. A diamagnetic bis-chelate ferrous complex [Fe{?3-(PNO)2}] was instead obtained from the reaction of FeCl2 with a twofold excess of (H)PNO in the presence of NaOMe. In the case of the PNN ligand, the 1:1 reaction with FeCl2 gave the neutral paramagnetic trigonal-bipyramidal complex [Fe(?3-PNN)Cl2]. The X-ray structures of [Fe{?3-(H)-PNO}2]Cl[FeCl4], [Fe2{?3-(H)PNO}2Cl6] and [Fe(?3-PNN)Cl2] are reported, together with CV and magnetic susceptibility measurements and an ab initio study aimed at rationalizing the different stoichiometries and structures observed with the two tridentate ligands. (literal)
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