Organic Chemistry - Exam 1 - NMR, IR, MS
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30 Terms
The hydrogens on which functional groups tend to show up as singlets on H-NMR?
Alcohols/Amines
What is the H-NMR chemical shift of a proton on a primary alkane?
0.9
What is the H-NMR chemical shift of a proton on secondary alkane?
1.3
What is the H-NMR chemical shift of a proton on a tertiary alkane?
1.4
What is the H-NMR chemical shift of a proton on a methyl next to a ketone?
2.1
What is the H-NMR chemical shift of a proton on a triple-bonded carbon?
2.5
What is the H-NMR chemical shift of a proton on a carbon next to a halogen or oxygen?
3-4
What is the H-NMR chemical shift of a proton on a double-bonded carbon(vinyl)?
5-6
What is the H-NMR chemical shift of a proton on a methyl attached to a double-bonded carbon (allylic)?
1.7
What is the H-NMR chemical shift of a proton on a benzene ring (aromatic)?
7.2
What is the H-NMR chemical shift of a proton on a methyl attached to a benzene ring(benzylic)?
2.3
What is the H-NMR chemical shift of an aldehyde carbon?
9-10
What is the H-NMR chemical shift of a proton on a carboxylic acid?
10-12
What is the H-NMR chemical shift of a proton on an alcohol?
2-5
What is the H-NMR chemical shift of a phenol proton?
4-7
What is the H-NMR chemical shift of an amine proton?
1.5-4
What is the IR absorption of sp3 C-H in (cm^-1)?
2990-2850
What is the IR absorption of sp2 C-H in (cm^-1)?
3100-3010
What is the IR absorption of C=C in (cm^-1)?
1600
What is the IR absorption of sp C-H in (cm^-1)?
3300
What is the IR absorption of C(triple bond)C in (cm^-1)?
2260-2100
What is the IR absorption of aromatic C-H in (cm^-1)?
3100-3010
What is the IR absorption of aromatic C=C in (cm^-1)?
1600
What is the IR absorption O-H of in (cm^-1)?
3500-3200
What is the IR absorption of alcohol C-O in (cm^-1)?
1200-1000
What is the IR absorption of N-H in (cm^-1)?
3500-3200
What is the IR absorption of N(triple bond)C in (cm^-1)?
2260-2220
What is the IR absorption of C=O(excluding esters and amides) in (cm^-1)?
1730-1710
What is the IR absorption of C=O esters in (cm^-1)?
1755-1735
What is the IR absorption of C=O amides in (cm^-1)?
below 1700