Author(s):
Carvalho, Luís A. E. Batista de 
; Marques, M. Paula M. ; Tomkinson, John
Date: 2006
Persistent ID: http://hdl.handle.net/10316/10488
Origin: Estudo Geral - Universidade de Coimbra
Document details
Transverse Acoustic Modes of Biogenic and α,ω-Polyamines: A Study by Inelastic...
Description
A complete analysis of the transverse acoustic modes (TAMs) for the homologous series of α,ω-diamines (H2N(CH2)nNH2) (n = 2−10, n = 12) as well as for the biogenic polyamines spermidine and spermine was undertaken, by Raman and inelastic neutron scattering (INS) spectroscopies combined with density functional theory (DFT) calculations. A complete assignment of the whole set of TAMs was carried out, for both the undeuterated and N-deuterated species. 1,2-Diaminoethane was found to display exceptional behavior, probably due to the formation of dimers in the solid state. An n-even/n-odd dependence of the low frequency INS pattern was observed for these polyamines. The very good accordance between their INS experimental TAMs and the ones previously reported for the corresponding n-alkanes suggest a close conformational similarity between these systems. http://dx.doi.org/10.1021/jp064837d
A complete analysis of the transverse acoustic modes (TAMs) for the homologous series of α,ω-diamines (H2N(CH2)nNH2) (n = 2−10, n = 12) as well as for the biogenic polyamines spermidine and spermine was undertaken, by Raman and inelastic neutron scattering (INS) spectroscopies combined with density functional theory (DFT) calculations. A complete assignment of the whole set of TAMs was carried out, for both the undeuterated and N-deuterated species. 1,2-Diaminoethane was found to display exceptional behavior, probably due to the formation of dimers in the solid state. An n-even/n-odd dependence of the low frequency INS pattern was observed for these polyamines. The very good accordance between their INS experimental TAMs and the ones previously reported for the corresponding n-alkanes suggest a close conformational similarity between these systems. http://dx.doi.org/10.1021/jp064837d
Document Type
Article
Language English
Language English
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