The excitation spectrum of 1,6-epoxy-[10]annulene in the region of the lowest electronic transition (417±390 nm) has been measured under supersonic expansion conditions. The observed vibronic structure, with onset at 24 008 cmÿ1, is discussed mostly in terms of allowed transitions. Comparison with MCSCF/CAS calculations of vibrational frequencies in S0 and S1 allows the assignment of several excited state fundamentals and correlation with ground state modes. Both the experimental and theoretical results point to the conclusion that equilibrium geometry changes upon excitation, with the C1 and C6 atoms of the molecular ring, connected by the epoxy bridge, moving slightly apart going from S0 to S1

The jet-cooled S0 -> S1 excitation spectrum of 1,6-epoxy-[10]annulene / A. GIUGNI; R. ERAMO; S. CAVALIERI; G. PIETRAPERZIA; M. BECUCCI; C. GELLINI; L. MORONI; P. R. SALVI. - In: CHEMICAL PHYSICS LETTERS. - ISSN 0009-2614. - STAMPA. - 330:(2000), pp. 315-324.

The jet-cooled S0 -> S1 excitation spectrum of 1,6-epoxy-[10]annulene

CAVALIERI, STEFANO;PIETRAPERZIA, GIANGAETANO;BECUCCI, MAURIZIO;GELLINI, CRISTINA;SALVI, PIER REMIGIO
2000

Abstract

The excitation spectrum of 1,6-epoxy-[10]annulene in the region of the lowest electronic transition (417±390 nm) has been measured under supersonic expansion conditions. The observed vibronic structure, with onset at 24 008 cmÿ1, is discussed mostly in terms of allowed transitions. Comparison with MCSCF/CAS calculations of vibrational frequencies in S0 and S1 allows the assignment of several excited state fundamentals and correlation with ground state modes. Both the experimental and theoretical results point to the conclusion that equilibrium geometry changes upon excitation, with the C1 and C6 atoms of the molecular ring, connected by the epoxy bridge, moving slightly apart going from S0 to S1
2000
330
315
324
A. GIUGNI; R. ERAMO; S. CAVALIERI; G. PIETRAPERZIA; M. BECUCCI; C. GELLINI; L. MORONI; P. R. SALVI
File in questo prodotto:
File Dimensione Formato  
jet.pdf

Accesso chiuso

Tipologia: Versione finale referata (Postprint, Accepted manuscript)
Licenza: Tutti i diritti riservati
Dimensione 211.66 kB
Formato Adobe PDF
211.66 kB Adobe PDF   Richiedi una copia

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

Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/255497
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 2
  • ???jsp.display-item.citation.isi??? 3
social impact