ISSN:
0377-0486
Keywords:
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Physics
Notes:
We report in this work on some potential applications and advantages of the four-channel Raman detection technique developed recently at this laboratory. The capability of recording four different Raman signals simultaneously and processing them electronically by scaling of each signal in order to obtain a desired linear combination, has been fully exploited. The simultaneous measurement of I∥ and I⊥ of the Raman spectra of pyridine and a mixture of pyridine+methanol, thus allows us to derive the isotropic Raman bandwidths of ν1 and ν8b vibrations in the hydrogen-bonded species C5H5N…HOCH3 and at the same time very small frequency shifts of vibrations of the non hydrogen-bonded pyridine (in mixture) as compared to pure pyridine. The smallest shift that could be measured was 0.045 cm-1. It has been demonstrated that four-channel Raman difference spectroscopy has a distinct advantage for studying the vibrations of complex systems such as a hydrogen-bonded species.
Additional Material:
3 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/jrs.1250140210
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