The rhodium(I) complexes [Rh(LL)(NBD)]BF4 and [Rh(LL)]BF4 (LL=diphosphines, bidentate phosphorus and sulfur or nitrogen ligands) react with dioxygen to give 1:1 adducts of various stabilities, the ligands being stable towards oxidation. The mononuclear [Rh(dppe)(H2O)O2]BF4, which has been isolated in the solid state, oxidizes inorganic oxides (SO2, N2O4) in stoichiometric reactions giving the corresponding sulfato and di-nitrato derivatives, respectively, as solid compounds. The [Rh(LL)O2]+ cations also catalyze the aldol-condensation of acetone. ESR studies on the essentially diamagnetic [Rh(dppe)H2O)O2]BF4 complex show the presence of significant amounts of a paramagnetic rhodium(II)-superoxide species.

Preparation and reactivity of new dioxygen adducts of rhodium containing phosphine ligands.

MORVILLO, ANTONINO;
1986

Abstract

The rhodium(I) complexes [Rh(LL)(NBD)]BF4 and [Rh(LL)]BF4 (LL=diphosphines, bidentate phosphorus and sulfur or nitrogen ligands) react with dioxygen to give 1:1 adducts of various stabilities, the ligands being stable towards oxidation. The mononuclear [Rh(dppe)(H2O)O2]BF4, which has been isolated in the solid state, oxidizes inorganic oxides (SO2, N2O4) in stoichiometric reactions giving the corresponding sulfato and di-nitrato derivatives, respectively, as solid compounds. The [Rh(LL)O2]+ cations also catalyze the aldol-condensation of acetone. ESR studies on the essentially diamagnetic [Rh(dppe)H2O)O2]BF4 complex show the presence of significant amounts of a paramagnetic rhodium(II)-superoxide species.
1986
File in questo prodotto:
Non ci sono file associati a questo prodotto.
Pubblicazioni consigliate

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11577/136413
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? ND
  • OpenAlex ND
social impact