Chemistry
Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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10. A racemic mixture of (R)- and (S)- citalopram (figure 4) needs to be
separated by liquid chromatography and detected. The separation is
achieved with reversed phase chromatography.
Figure 4
F
F
H3C
N-CH3
-CH3
H3C
Answer ALL parts of this question.
a) Discuss whether the enantiomers in Figure 4 are fluorescent and if so
whether fluorescence can help to differentiate them.
b) Discuss whether the enantiomers in Figure 4 will have a signal in
Raman spectroscopy, and if so, whether the Raman spectra can help
to differentiate them.
c) Describe the experimental conditions that would be needed to attempt
their separation with ion pair chromatography.
d) Propose an alternative technique to ion pair chromatography for the
fast separation of both molecules in Figure 4.
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Transcribed Image Text:10. A racemic mixture of (R)- and (S)- citalopram (figure 4) needs to be separated by liquid chromatography and detected. The separation is achieved with reversed phase chromatography. Figure 4 F F H3C N-CH3 -CH3 H3C Answer ALL parts of this question. a) Discuss whether the enantiomers in Figure 4 are fluorescent and if so whether fluorescence can help to differentiate them. b) Discuss whether the enantiomers in Figure 4 will have a signal in Raman spectroscopy, and if so, whether the Raman spectra can help to differentiate them. c) Describe the experimental conditions that would be needed to attempt their separation with ion pair chromatography. d) Propose an alternative technique to ion pair chromatography for the fast separation of both molecules in Figure 4.
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