What do you find in the 0.9 - 2.0 ppm region?
H's belonging to an alkane Carbon
(the Carbon the H is attached to is just single bonded to either 1, 2, or 3 other R groups)
The more OTHER things the Carbon is bound to (i.e. the less 'brother' H's it has, the closer to 2.0 it becomes)
What do you find in the 1.5 - 2.5 ppm region?
H's belonging to a Carbon that is NEXT to another Carbon that is double-bonded
(i.e. H's next to either an Alkene OR a Carbonyl)
What you're picking up is the H neighbors on the other side of the Alkene or Carbonyl carbon, i.e. the H's that are actually TWO carbons away (ex: a Ketone.. the H's from the left side to the right side)
>> You CANNOT actually move up across the Alkene here; only can continue to follow the 'alkane chain' that happens to have Alkene or Carbonyl branching off of it
What do you find in the 2.5 - 4.0 ppm region?
H's attached to a Halogenated Carbon!
What do you find in the 4.5 - 6.0 ppm region?
H's attached to an Alkene carbon!
(not to an Aromatic though.. Aromatic = the next region higher due to higher # of double bonds)
What do you find in the 6.5 - 8.0 ppm region?
H's attached to an Aromatic Ring(i.e. a phenyl)
What do you find in the 9.0 - 10.0 ppm region?
H NMR, 9.0 - 10.0:
H's belonging to an Aldehyde
What do you find in the 10.0 - 12.0 ppm region?