This section requires Javascript.
You are seeing this because something didn't load right. We suggest you, (a) try
refreshing the page, (b) enabling javascript if it is disabled on your browser and,
finally, (c)
loading the
non-javascript version of this page
. We're sorry about the hassle.
The molecules are not cis-trans isomers because part of the requirement is that carbons are double bonded (here it's silicon), and the groups attached are rotated in different ways.