I have been looking through possible triads over bass notes and found an odd one.. F minor triad over B bass note. I rearranged the notes to give me a particular 7th chord 1 4 ♯5 7. Basically a Maj7♯5sus4 chord.. it seems to come from the 3rd mode of harmonic minor, Major♯5. It sounds really weird.. probably due to the tritone built inside this 4 note chord but yet it has a major 7th. Rearranging it more I got this chord 1 ♯5 7 11. Here are the questions:
1) Is the 11th in this chord 1 ♯5 7 11 an avoid note? There is no 3rd in this chord but it seems heavily implied anyways since it mostly came from the Major♯5 scale. It doesn't seem to help that it also forms a tritone with the major 7th...
2) When it comes to avoid intervals (in context of chord voicings) is the b9 interval the only interval I should watch out for? For example B E G C for C Maj 7. Or is there more avoid intervals (perhaps ♯11?)?
PS: A probable use for this chord for a progression may be D min - C Maj7♯5sus4 - C maj for those who want an example.