2 misc. Flashcards
What are arenes?
- Hydrocarbons with at least one benzene ring.
Why is it not possible to have a trans config in cyclic alkenes of seven or fewer carbons?
Because of angle strain.
Are trans or cis cyclic alkenes usually more stable?
Cis configurations are often more stable.
What is the inductive effect?
The inductive effect is the shift of electrons in response to the electronegativity of adjacent atoms.
The inductive effect accounts for how the electron releasing ability of alkyl groups bonded to a cationic carbon atom,
How does the inductive effect operate?
The inductive effect operates as follows: positive charge of the carbocation draws electron density towards itself that polarises electrons from surrounding sigma bonds towards it. Thus, explains how less substituted carbons can be stabilised in a carbocationic form.
What is n in huckel’s rule
n is not related to a molecule. Simply you need 2, 6, 10, 14etc. Electrons in a planar cyclic molecule. If needs to meet that to be aromatic.
So don’t think about n. ThF just happens to be the pattern