[unbornzodiac]

Hello,

I'm stuck on getting the 3rd isomer diagram for:

C2H2FBr

I'm sure there are 3, could someone please help diagram them for me?

Thanks.  

[mike]

Which ones do you have already?

[unbornzodiac]

i have these 2. i don't understand the 3rd because i think it will be the same as the others just flipped... do these even work?

[mike]

F                                             F
C=C               C=C              C=C
      Br            F     Br                 Br

[unbornzodiac]

and the rest is hydrogen?

[unbornzodiac]

sorry for the double post...

but are these the same just flipped? or are they different? how do you determine what is same/different when flipped?
F
C=C              C=C
      Br            F    Br

[mike]

They are definetly different. The C=C carbon double bond does not rotate arounf the C=C bond (it can't). I don't think that "flipped" is the right word to use here. If you have access to some molecular model kits (ball and stick style) you can make a model of this molecule and see for yourself.

Oh and by the way, yes the rest is Hydrogen.

[unbornzodiac]

thanks mike!

i understand now