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Thursday, 24 July 2014

ETHYL PROPIONATE NMR, carbonyl is dad and oxygen mom, a methyl gets more attention

Dedicated to all moms in the world
C=O group is dad

O atom is mom


Carbonyl is dad and oxygen mom hence c labelled methyl has higher chemical shift  and gets a little more attention
SEE BELOW
NMR IS EASY
A chemical has Formula: C5H10O2
C5H10O2
Rule 2, omit O, gives C5H10
5 - 10/2 + 1 = 1 degree of unsaturation.
Look for 1 pi bond or aliphatic ring.
IR
IR spectrum


The band at 1740 indicates a carbonyl, probably a saturated aliphatic ester. The bands at 3000-2850 indicate C-H alkane stretches. The bands in the region 1320-1000 could be due to C-O stretch, consistent with an ester.


NMR spectrum
Structure answerThis is the structure. See if you can assign the peaks on your own.
NMR answerC has a higher chemical shift than D because it's closer to a more electron-withdrawing functional group.
Carbonyl is dad and oxygen mom,  hence c has higher chemical shift  and gets a little more attention in proton nmr
13 C NMR
Mass spectrum

RAMAN



WHAT HAPPENS WHEN A CHLORO IS INTRODUCED

THE INTERPRETATION IS BELOW


remember "a" labelled  CH3 appears as a doublet
WHEN THERE IS ONE METHYL



WHEN THERE ONE CH2 SHORT 

WHEN MOM HAS ONE MORE CH2
PROPYL PROPIONATE, try this on your own
Propyl propanoate.png


1H NMR


image of Propyl proprionate

see interpretation

 BIGGER ONE THAN OBOVE
image of Propyl proprionate

13C NMR
image of Propyl proprionate

APT
image of Propyl proprionate

COSY
image of Propyl proprionate
WILL PASTE INTERPRETATION AFTER ONE WEEK...................