My question is from a chemistry assignment Describe the structure and bonding associated with C3 of pent-2-ene? Thanks in advance!

Question

2577 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2018-05-30T16:50:07

Here's what I find.

The structure of pent-2-ene is

pentene

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 $"C1-C2"$ and $"C4-C5"$ 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 $"C2-C3"$ bond axis
The $"C=C"$ double bond consists of a σ bond ( $"sp"^2"-sp"^2$ end-on overlap) and a π bond ( $"p-p"$ sideways overlap).