IR and IR + UV spectroscopy of isolated [Al-AcPheOMe]n+ cluster cations (n = 1, 3).
Phys Chem Chem Phys
; 14(22): 8185-91, 2012 Jun 14.
Article
en En
| MEDLINE
| ID: mdl-22532114
ABSTRACT
Singly and triply charged cationic clusters of aluminium and the protected amino acid AcPheOMe are investigated in a supersonic beam by using a combination of a thermic and a laser ablation ion source. For the singly charged species UV- and IR photodissociation spectroscopy is applied. In the case of the triply charged clusters a variant of combined IR + UV spectroscopy is used to obtain information in the NH-stretching region. By comparison with DFT calculations structural assignments are suggested and it turns out that both clusters prefer a helical arrangement with aluminium being aggregated to both carbonyl groups. For the triply charged cluster a globular structure is formed in which aluminium is captured both by the carbonyl groups and the phenyl ring.
Texto completo:
1
Bases de datos:
MEDLINE
Asunto principal:
Compuestos Organometálicos
/
Fenilalanina
/
Aluminio
Idioma:
En
Revista:
Phys Chem Chem Phys
Asunto de la revista:
BIOFISICA
/
QUIMICA
Año:
2012
Tipo del documento:
Article
País de afiliación:
Alemania