Re: Cis and Trans isomers

kingerjd@PLU.edu
Wed, 18 Sep 1996 16:50:19 -0800 (PST)

stephanie-
it is my understanding that cis/trans is determined when the structure is
formed. once an alkene structure is formed it cannot rotate around the
double bond. in order to change orientation the structure must be broken
apart and reassembled into the different form. i hope this helps.

julie
kingerjd@plu.edu

Among those I like or admire,
I can find no common denominator.
But, among those I love, I can:
They all make me laugh.

--unknown

On Wed, 18 Sep 1996 becksm@PLU.edu wrote:

>
> I thought that I understood cis and trans isomers formed from the
> rotation of the pi bond. But in today's lecture, Professor Fryhle showed
> us with the model that the pi bonds inhibit rotation. What am I missing?
> -Stephanie Beck
> becksm@plu.edu
>