# Carbocation formation and stability from bromo compounds

When heated,the following bromo-species all form carbocations via $$\sigma$$ bond cleavage. For each structure draw the corresponding carbocation and briefly describe how it is stabilised.

This is my attempt at answering the question:

I would like to know whether I have drawn the correct carbocation forms of each of these bromo-compounds and if my reasoning is sound.

Yes, both your answers and reasoning are correct. For the second compound a slight ambiguity might arise, because the $$\mathrm{sp^2}$$-hybridized carbons show $$\text{-I}$$ effect which would destabilize the carbocation, however considering the fact that there are not only $$\ce{2 Me}$$— groups attached which show $$\text{+I}$$, they are also closer than one of the $$\mathrm{sp^2}$$- carbons, it is quite natural that the net inductive effect would stabilize it.