Your frame does not have a hanger tab to attach the derailluer.
That little hole is for a rack or fenders.
Your frame was intended to be used with a derailluer that has a "claw".
There are some adapters that will clamp on a separate hanger using the quick release lever, then you can attach the derailleur. Or get another claw derailleur.
Last edited by Homebrew01; 04-15-16 at 05:53 PM.