My question is from a chemistry assignment Describe the structure and bonding associated with C3 of pent2ene? Thanks in advance!
1 Answer
May 30, 2018
Answer:
Here's what I find.
Explanation:
The structure of pent2ene is
The important structural features are

Carbons 1, 4, and 5 are
#"sp"^3# hybridized, with a tetrahedral geometry and bond angles of 120° 
There is free rotation about the
#"C1C2"# and#"C4C5"# bond axes 
Carbons 2 and 3 are
#"sp"^2# hybridized with bond angles of 120° and a trigonal planar geometry 
Carbons 1, 2, 3, and 4 and the
#"H"# atoms on carbons 2 and 3 are all in the same plane 
There is no free rotation about the
#"C2C3"# bond axis 
The
#"C=C"# double bond consists of a σ bond (#"sp"^2"sp"^2# endon overlap) and a π bond (#"pp"# sideways overlap).