In organic chemistry, alkyl bromides are compounds that contain a bromine atom attached to an alkyl group. For the formula C4H9Br, we can derive four different structural formulas, classified as primary, secondary, or tertiary alkyl bromides. Here are the structures:
1. 1-Bromobutane (Primary alkyl bromide)
In this structure, the bromine atom is attached to the end carbon of the butane chain, making it a primary alkyl bromide.
2. 2-Bromobutane (Secondary alkyl bromide)
Here, the bromine atom is bonded to the second carbon in the chain, classifying it as a secondary alkyl bromide because the carbon bearing the bromine is attached to two other carbons.
3. 1-Bromo-2-methylpropane (Primary alkyl bromide)
This compound also has the bromine attached to a terminal carbon (equivalent to 1-bromobutane) and is thus classified as a primary alkyl bromide.
4. 2-Bromo-2-methylpropane (Tertiary alkyl bromide)
In this case, the bromine atom is connected to a carbon that is attached to three other carbons, making this a tertiary alkyl bromide.
In summary:
- 1-Bromobutane: Primary
- 2-Bromobutane: Secondary
- 1-Bromo-2-methylpropane: Primary
- 2-Bromo-2-methylpropane: Tertiary