sdjknights

I remember, during my studies, being taught of, I think, three types of chords that Debussy used in place of traditional dominants, but can't remember all of them. I can remember some of the definitions and some of the names, but I will concede that even those memories may be a bit wrong. Does anybody know what I'm thinking of exactly? What I think I remember there being was a tritone chord starting from the dominant note, a tritone chord starting at the diminished 5th, and a dominant 7th chord starting at the diminished 5th. Like I say, I'm not sure of these, and I would also quite like to know what these are called. Also, my first post. Hello all