13C- NMR Flashcards
1
Q
What is Broad Band C-NMR
A
Protons are decoupled, only singlets show, number of peaks is equal to the number of carbons present in the molecule!
2
Q
Off resonance decoupling? (ORD)
A
Only allows J1 coupling
CH3(quartet), CH2(triplet), CH(doublet), C(singlet)
3
Q
13C DEPT
A
Never shows quantenary carbons (C with no H)
4
Q
135 DEPT
A
Shows CH2 as down peaks. CH3/CH and up peaks! No lonely C
5
Q
90 DEPT
A
Only shows methines (CH)
6
Q
What is at 120-160 in C-NMR
A
Benzene
7
Q
Where is a ketone in C-NMR
A
200-220
8
Q
what is at 190-200
A
aldehyde
9
Q
C=C in C-NMR
A
115-140
10
Q
C=O in ester
A
170-185
11
Q
CH2OH
A
50-65
12
Q
CH2CL
A
40-45
13
Q
NH2
A
37-45
14
Q
CH3CO-
A
20-30
15
Q
CH2
A
16-25
