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Overtones of longitudinal acoustical vibration of palmitic acid adsorbed on silver

✍ Scribed by J.S. Suh

Publisher
Elsevier Science
Year
1992
Tongue
English
Weight
296 KB
Volume
193
Category
Article
ISSN
0009-2614

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✦ Synopsis

The SERS spectrum of palmitic acid adsorbed on silver colloid surfaces is reported. The high order overtones, up to the 6th, of the accordion mode in the C-C-C deformation region are observed. The calculated frequencies of the overtone transitions from the energy expression for the anharmonic oscillator, with that w. is 104 cm-' and w,x. is 2 cm-', are excellent in agreement with the observed ones. We suggest a conformation that the four carbons from the carboxylate group of palmitic acid have a gauche conformation and the other carbons have an all-trans conformation.

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