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Topic: Determining keto-enol ratio with IR spectroscopy  (Read 4902 times)

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Offline horsebox

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Determining keto-enol ratio with IR spectroscopy
« on: October 25, 2010, 10:36:12 PM »
Can this be done?
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Offline sjb

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Re: Determining keto-enol ratio with IR spectroscopy
« Reply #1 on: October 27, 2010, 08:31:25 AM »
Quote from: horsebox on October 25, 2010, 10:36:12 PM
Can this be done?

Qualitative IR is certainly possible, consider the differences between the enol and keto forms
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Offline horsebox

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Re: Determining keto-enol ratio with IR spectroscopy
« Reply #2 on: October 27, 2010, 09:33:06 PM »
Determining the ratio would be quantitative though wouldn't it? I know what peaks to look for to identify both of these tautomers but I have no idea how an IR (or even NMR) could be used for quantitative analysis. The IR I have right now shows no -OH or C=C peaks so I suppose I can assume the majority of the compound is in its keto form.
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