At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
Aromaticity is a property of conjugated cycloalkenes in which the stabilization of the molecule is strong due to the ability of the electrons in the pi orbitals to delocalize and act as a framework to create a planar molecule. The three general requirements for a compound to be aromatic are: The compound must be cyclic Each element within the ring must have a p-orbital that is perpendicular to the ring, hence the molecule is planar. The compound must follow Hückel's Rule (the ring has to contain 4n+2 p-orbital electrons). The simplest compound that is aromatic is benzene. Benzene (C6H6) is a cyclic compound, it is planar and follows Huckel's Rule. It follows Huckel's Rule because 4n+2=6 (as benzene has 6 pi electrons) So n=1, which is a positive integer, and therefore follows the rule. Note: Pi electrons are sp2 hybridized
Example 1: This example is not aromatic because it doesn't follow Huckel's Rule as the top carbon is sp3 hybridized.
Example 2: This is aromatic as it follows the aromatic requirements and looking at Huckel's Rule n=1
Once again Tara job well done
@taramgrant0543664 I sometimes hear of the term Anti aromatic, is that the same as non-aromatic?
Awe that's a great question! Never even thought about adding that in. So aromatic compounds An aromatic molecule is: Flat, Cyclic, Completely conjugated and the number of π electrons must obey Huckel’s rule of 4n+2. An anti-aromatic molecule is much like the aromatic compound in that it is also Flat, Cyclic, and Completely conjugated but the difference is that the number of π electrons follows the formula of 4n instead of the 4n+2. A non-aromatic molecule is: NOT flat, NOT cyclic, and NOT completely conjugated. Some examples include the typical alkane and/or alkene such as butane or hexane.
Sometimes you have an aromatic system, I.e a heterocyclic compound, with a (oxygen or nitrogen atom in the center) sometimes those lone pair electrons participate in the conjugated system; if something is like your example #2 but does that nitrogen have any pi electrons? because that's sp^3 hybridized so those electrons would have to be in a p orbital I guess
Thanks for that clarification