using butene as an example, distinguish between structural and geometrical isomers?

Question

using butene as an example, distinguish between structural and geometrical isomers

Answer 1

I can't really draw the different iomers with this program, but I will describe the difference between structural and geometrical isomers. A geometrtrical isomer involves just rotation about single bonds (without breaking/rearranging any bonds). Structural isomers contains the same number of each atom, but can't be made to match each other by just rotating bonds; you have to break, re-arange, and re-connect bonds. If you have a molecular model kit, it will be easy to see this difference. Some structural isomers of butene would be (by name) 1-butene; cis-2-butene; trans-2 butene and isobutylene [2-methyl-propene]. I hope this is of help to you.

Answer 2

Butene is a chain of four carbons, and has one double bond. One isomer has the double bond in the middle; the other one has it between an end carbon and the next one in the chain.

Answer 3

for all that i can remember from high school chemistry, Sn has oxidation states of +2 and +4 only. that means that it can only form SnI4 or SnI2... where did the other 2 extra phenolic groups get attached? tin can never go to 6+ state. its in group 14 remember!