Just place the speakers in the corners not touching the wall but a little away from them. I sugest to unmount that tv and place it in the center for the best experience...but honestly any setup will do just fine as long as the speakers are separated enough. I'd just mess arround with them while playing a movie with the desired volume until it sounds good. Be careful and make sure there's nothing in the way between the listener and the speakers.
That's a weird chair btw.