Are you able to attack a dark elixir storage without own elixir storage?
are you able to attack an enemy's dark elixir storage without your own dark elixir storage to hold the stolen resource?
Furthermore if you are able to attack it what consequences occur.
Yes you can attack the enemy's dark elixir storage. However, if you don't have your own dark elixir storage, you won't be able to keep the dark elixir gained from the battle.