Table 3.
Spectral Position of the Fluorescence Maximum and Major Raman Peaks of Each Carboxylic Acid, with Assignments to Generalized Vibrational Modes
| Sample | Fluor, nm | Raman, cm−1 | Assignment | References |
|---|---|---|---|---|
| Palmitic acid | n.d. | 1446 | C − C (S.) | Socrates (2001) |
| 2891 | C − H (S.) | Socrates (2001) | ||
| Benzoic acid | 304 | 1614 | C = C (S.) | Socrates (2001) |
| 3227 | Overtone | |||
| 4-Ethylbenzoic acid | 350 | 1612 | C = C (S.) | Socrates (2001) |
| 3234 | Overtone | |||
| Phthalic acid | 339 | 1592 | C = C (S.) | Osterrothová and Jehlička (2010) |
| 3178 | Overtone | |||
| Mellitic acid | 315 | 1628 | C = C (S.) | Osterrothová and Jehlička (2010) |
| 3144 | O–H (S.) | Socrates (2001) |
All Raman peak positions have an estimated uncertainty of ±5 cm−1.
n.d. = not detected; S. = stretching mode.