In the song Ordinary World from Duran Duran, the progression for the chorus is as follow (as shown by Carl Brown of guitarlessons365), B5 - F#m - Dsus2 - some C# chord - E5.
The chord between Dsus2 and E5 consist of the 3 notes C#, A and C#. It is obvious to me that the chord is build as follow, root (C#) - #5 (A) - octave (C#).
My question is, how do we properly name this chord. I know it is some kind of augmented chord due to the #5, but with the absense of a 2nd, 3rd and 4th (or any chord tone), is this one of the very few times where the (no 3) notation is used, so can we call it a C#aug (no3) chord. Please bear with me here as I have no formal training in music theory. I got hammered the other day for calling it a powerchord.