<-Cinnamic AcidI need to do an NMR analysis on this molecule.. (We are supposed to know this from last year but our ONE we did last year was way easier.) In our class we do a 5 step analysis.
The first step is to draw the structure.
The second step is to label the H's (a,b,c,d, etc.)
(See attached file dssd.bmp)
The third step is to order the (a/b/c/...):
1. first by resononce effects where + is deshielded and - is shielded
2.second by indctive effects(closer to electonegetive is deshielded)
The 3rd step is the step I'm having lots of trouble with.
By using the resonance and inductive effects we are supose to put the a/b/c/d.... in order starting with the one that is most electronegetive.
The fourth step is too number the H's...whcih I have no problem with.
The fith step requires us to find the coupling constants. I have looked on the interent for help but have found that they only find it of A or B or C, not Ab or Ac or Bc or Ba.....etc.
If you, steve, or anyone else who knows basics to nmr can you please help me understand at least step 3....
Thanks. Nicole:D:D
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