IR, Raman and surface-enhanced Raman study of desferrioxamine B and its Fe(III) complex, ferrioxamine B

✍ Scribed by O. Cozar; N. Leopold; C. Jelic; V. Chiş; L. David; A. Mocanu; M. Tomoaia-Cotişel

• Book ID: 104058374
• Publisher: Elsevier Science
• Year: 2006
• Tongue: English
• Weight: 138 KB
• Volume: 788
• Category: Article
• ISSN: 0022-2860
• DOI: 10.1016/j.molstruc.2005.04.035

✦ Synopsis

IR, Raman and surface-enhanced Raman scattering (SERS) spectroscopies were employed for the structural investigation of the chelator desferrioxamine B and its Fe(III) complex, ferrioxamine B. Comparing the FT-IR absorptions of desferrioxamine B and ferrioxamine B, the structural changes due to the Fe(III) chelation were clearly evidenced by spectral analysis. Despite the intense C]O stretching vibration in the FT-Raman spectrum of desferrioxamine B, the FT-SERS spectrum is dominated by a strong C]N stretching vibration, indicating a delocalization of the N lone pair of electrons and the formation of the C]N bond in the hydroxamate groups. The desferrioxamine B and ferrioxamine B molecules are adsorbed to the silver colloidal particles through the O atoms of the hydroxamate functional groups, with similar orientation with respect to silver surface.