CH610B Sophomore Organic II

Dr. Brian Pagenkopf   


 

 

NMR Summary

 

Information from NMR spectrum…

…and what it tells us (in layman’s terms)

 

 

Integral

number of hydrogens in that set (how many?)

 

 

Splitting

number of hydrogens in each set of equivalent hydrogens on adjacent carbons calculated with the n + 1 rule  (what’s next door?)

 

 

Chemical Shift

Chemical and electronic environment (where am I?)

 

Where a set refers to a group of chemically, stereochemically and electronically equivalent hydrogens.

 

 

How do I determine…

 

 

 

 …the Integral?

Count

 

 

…who the neighbors are?

Interpret the splitting pattern and use the n + 1 rule

 

 

…what the chemical shift means?

Remember information from the following diagram:

 

 

 

 

 

 

and a small version…