write two geometric isomers for 2-heptene
We can't draw structures on this board.
If you want to draw a straight line formula, it would look something like this:
C-C=C-C-C-C-C (You can add the H atoms)
On carbon 2(from the left) AND on carbon 3, place the two H atoms on the same side (say on top) for the cis isomer (or both on the bottom). For the trans isomer, put the two H atoms on opposite sides (1 on the top and 1 on the bottom).
I found two sites that show the structures but I could not post them. Here is another one showing the trans isomer. Its at the bottom of the page. I'll look for another one for the trans isomer and post it if I can find one.
I found other sites but they won't post either so I suppose we must be satisfied with what I have given you. Let me know you need more help. I can describe it in more detail if you tell me what you don't understand.
Ms Sue graciously told me what was wrong. Here are the sites, perhaps a little late, but better late than never.
http://www.sigmaaldrich.com/catalog/ProductDetail.do?D7=0&N5=SEARCH_CONCAT_PNO|BRAND_KEY&N4=268941|ALDRICH&N25=0&QS=ON&F=SPEC
and on the next site scroll to the bottom of the page.
http://www.chemicalregister.com/Trans-2-heptene/Suppliers/pid56084.htm
To identify the geometric isomers for 2-heptene, we first need to understand its structure. 2-heptene is an unsaturated hydrocarbon with the molecular formula C7H14, and it contains a double bond between two carbon atoms.
Geometric isomers occur when there is restricted rotation around the double bond, resulting in different arrangements of groups attached to the carbons involved in the double bond. In the case of 2-heptene, there are two possible geometric isomers based on the relative positions of the substituent groups attached to the double-bonded carbon atoms.
To determine the geometric isomers, we need to identify the positions of the substituents attached to each carbon of the double bond. For 2-heptene, one carbon of the double bond is called the "cis" carbon, while the other is the "trans" carbon.
Here are the two geometric isomers for 2-heptene:
1. cis-2-heptene: In this isomer, the substituents attached to the carbons of the double bond are on the same side. The cis- isomer of 2-heptene can be represented as follows:
CH3CH(CH2)3CH=CH2
2. trans-2-heptene: In this isomer, the substituents attached to the carbons of the double bond are on opposite sides. The trans- isomer of 2-heptene can be represented as follows:
CH3CH2CH=CHCH2CH3
Please note that the "CH3" groups represent methyl (CH3) groups, and the "CH2" groups represent methylene (CH2) groups.
These two isomers have different physical and chemical properties due to the different spatial arrangements of the substituents around the double bond.