Treatment of the octahedral Ru(II) complex [ trans,cis,cis -RuCl 2 (DMSO-O) 2 (CO) 2 ] with an equimolar amount of 5,10- bis(3′-pyridyl)-15,20-diphenylporphyrin (3′- cis -DPyP) yielded, upon selective replacement of the DMSO ligands, the neutral 2 + 2 metallacycle 2. NMR spectroscopy provided unambiguous evidence that only one highly symmetrical species, in which the two chromophores are held in a slipped cofacial arrangement by the external Ru(II) metal fragments, exists in solution. The unprecedented geometry of 2, and of the fully zincated analogue 2a, were confirmed in the solid state by X-ray structural investigations.

Pyridylporphyrin metallacycles with a slipped cofacial geometry: spectroscopic, X-ray and photophysical characterization.

IENGO, ELISABETTA;ZANGRANDO, ENNIO;ALESSIO, ENZO;
2005

Abstract

Treatment of the octahedral Ru(II) complex [ trans,cis,cis -RuCl 2 (DMSO-O) 2 (CO) 2 ] with an equimolar amount of 5,10- bis(3′-pyridyl)-15,20-diphenylporphyrin (3′- cis -DPyP) yielded, upon selective replacement of the DMSO ligands, the neutral 2 + 2 metallacycle 2. NMR spectroscopy provided unambiguous evidence that only one highly symmetrical species, in which the two chromophores are held in a slipped cofacial arrangement by the external Ru(II) metal fragments, exists in solution. The unprecedented geometry of 2, and of the fully zincated analogue 2a, were confirmed in the solid state by X-ray structural investigations.
File in questo prodotto:
Non ci sono file associati a questo prodotto.

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/11368/1696180
 Attenzione

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

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 43
  • ???jsp.display-item.citation.isi??? 40
social impact