Sort the pairs of related compounds by their carbonyl stretching frequencies in cm–1. (There will be three compounds per bin.)
Bin # 1: Slightly higher
Bin #2: Slightly lower
Compounds:
-butanol
-but-2-enal
-heptan-3-one
-hept-4-en-3-one
-cinnamaldehyde
-3 phenylpropanal
To sort the compounds by their carbonyl stretching frequencies, you need to compare the relative values of the frequencies for each compound. Carbonyl stretching frequencies are typically measured in cm-1.
Here are the compounds and their corresponding carbonyl stretching frequencies:
-butanol: Does not have a carbonyl group, so it does not have a carbonyl stretching frequency.
-but-2-enal: Contains an aldehyde group, which typically has a carbonyl stretching frequency in the range of 1720-1740 cm-1.
-heptan-3-one: Contains a ketone group, which typically has a carbonyl stretching frequency in the range of 1700-1725 cm-1.
-hept-4-en-3-one: Contains a conjugated ketone group, which typically has a carbonyl stretching frequency slightly lower than that of a regular ketone, around 1650-1700 cm-1.
-cinnamaldehyde: Contains an aldehyde group, so its carbonyl stretching frequency will be similar to that of but-2-enal, around 1720-1740 cm-1.
-3-phenylpropanal: Contains an aldehyde group, so its carbonyl stretching frequency will also be similar to that of but-2-enal and cinnamaldehyde, around 1720-1740 cm-1.
Now, let's sort the compounds into the given bins based on their carbonyl stretching frequencies:
Bin #1: Slightly higher
-cinnamaldehyde
-3-phenylpropanal
-but-2-enal
Bin #2: Slightly lower
-heptan-3-one
-hept-4-en-3-one
Remember, the sorting is based on the relative values of the carbonyl stretching frequencies, with compounds having slightly higher frequencies placed in Bin #1 and compounds with slightly lower frequencies placed in Bin #2.