The diphenyl ditelluride PhTeTePh reacts with [Ir6(CO)15]2- (in refluxing tetrahydrofuran) or Ir6(CO)16 (in toluene) yielding [Ir6(CO)14(μ-TePh)]- or [Ir6(CO)13(μ-TePh)2], respectively. Analogous mono- and disubstituted iridium compounds were prepared with other diaryl disulfides or diselenides. Electrochemical experiments confirm the different reactivity of PhTeTePh and PhSSPh showing that the ditelluride adds to the electrogenerated transient radical [Ir6(CO)15]-• and the disulfide to [Ir6(CO)15]0. The two clusters consists of octahedra of iridium atoms with one or two edges bridged by phenyltellurolate ligands. The Ir−Ir bonds trans to the TePh unit are remarkably short.

Della Pergola, R., Ceriotti, A., Cinquantini, A., FABRIZI DE BIANI, F., Garlaschelli, L., Manassero, M., et al. (1998). Octahedral iridium clusters: synthesis, electrochemical mechanisms of formation, and solid-state structures of [Ir-6(CO)(14)(mu-TePh)](-) and [Ir-6(CO)(13)(mu-TePh)(2)]. ORGANOMETALLICS, 17, 802-806 [10.1021/om970621+].

Octahedral iridium clusters: synthesis, electrochemical mechanisms of formation, and solid-state structures of [Ir-6(CO)(14)(mu-TePh)](-) and [Ir-6(CO)(13)(mu-TePh)(2)]

CINQUANTINI, ARNALDO;FABRIZI DE BIANI, FABRIZIA;ZANELLO, PIERO
1998

Abstract

The diphenyl ditelluride PhTeTePh reacts with [Ir6(CO)15]2- (in refluxing tetrahydrofuran) or Ir6(CO)16 (in toluene) yielding [Ir6(CO)14(μ-TePh)]- or [Ir6(CO)13(μ-TePh)2], respectively. Analogous mono- and disubstituted iridium compounds were prepared with other diaryl disulfides or diselenides. Electrochemical experiments confirm the different reactivity of PhTeTePh and PhSSPh showing that the ditelluride adds to the electrogenerated transient radical [Ir6(CO)15]-• and the disulfide to [Ir6(CO)15]0. The two clusters consists of octahedra of iridium atoms with one or two edges bridged by phenyltellurolate ligands. The Ir−Ir bonds trans to the TePh unit are remarkably short.
Della Pergola, R., Ceriotti, A., Cinquantini, A., FABRIZI DE BIANI, F., Garlaschelli, L., Manassero, M., et al. (1998). Octahedral iridium clusters: synthesis, electrochemical mechanisms of formation, and solid-state structures of [Ir-6(CO)(14)(mu-TePh)](-) and [Ir-6(CO)(13)(mu-TePh)(2)]. ORGANOMETALLICS, 17, 802-806 [10.1021/om970621+].
File in questo prodotto:
File Dimensione Formato  
om970621+.pdf

non disponibili

Tipologia: Post-print
Licenza: NON PUBBLICO - Accesso privato/ristretto
Dimensione 123.02 kB
Formato Adobe PDF
123.02 kB Adobe PDF   Visualizza/Apri   Richiedi una copia

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: http://hdl.handle.net/11365/23065
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo