Vibrational and Surface Enhanced Raman Scattering Spectra of Sulfamic Acid

✍ Scribed by Daizy Philip; Antony Eapen; G. Aruldhas

• Publisher: Elsevier Science
• Year: 1995
• Tongue: English
• Weight: 239 KB
• Volume: 116
• Category: Article
• ISSN: 0022-4596
• DOI: 10.1006/jssc.1995.1206

✦ Synopsis

The analysis of the Raman and FTIR spectra of sulfamic acid suggest a structure between that of zwitterion and molecular form. SERS spectra have been analyzed in two types of silver colloids. As (\mathrm{S} \cdots \mathbf{O} \cdots \cdots) Ag linkages are formed in one colloid, (S=0) fundamentals are enhanced in intensity and shifted in frequency. Appearance of a (\delta \mathrm{SOH}) band indicates the retention of (\mathrm{SOH}) bonds in the metal-molecule adsorbed system. Further, splitting of the fundamentals, which arises from the lowering of the symmetry of the molecule on adsorption, is noticed. In the second colloid, the (\nu) (\mathrm{S}-\mathrm{O}) band is shifted in frequency and enhanced in intensity. No band corresponding to (\delta \mathrm{SOH}) is noticed, indicating the removal of protons and formation of S-O (\cdots \mathrm{Ag}) linkages. 1995 Academic Press, Inc.