 |
Consider compounds with the molecular formula C4H10.
|
|
|
|
There are two valid structures that fit this molecular
formula. |
|
|
|
| A linear structure: |
A branched structure: |
|
|
n-butane |
iso-butane (or 2-methylpropane) |
|
Model:
|
Model:
|
|
|
|
|
These two compounds are structural isomers,
they have the same number of carbon atoms (four) and hydrogen atoms (ten), but the atoms
are connected differently. |
|
|
|
Consider compounds with the molecular formula C4H9Br.
|
|
|
|
There are four valid structures with this molecular
formula. |
|
|
|
Two have linear carbon skeletons:
|
|
|
|
|
|
1-bromobutane |
2-bromobutane |
|
Model:
|
Model:
|
|
|
|
|
Two have branched carbon skeletons:
|
|
|
|
|
|
|
| 1-bromo-2-methylpropane |
2-bromo-2-methylpropane |
| Model:
|
Model:
|
|
|
|
|
Again, these four compounds are all structural
isomers of each other. |
|
|
|
They contain the same number and types of atoms, but
the atoms are connected differently. |
|
|
