aromatic-compound

Aromatic Compound - Organic compounds characterised by conjugated pi electron systems forming cyclic, planar rings. These structures follow Hückel's rule ( π electrons for aromatic stability). Although commonly placed under organic chemistry, many fundamental principles are relevant in general-chemistry contexts.

The classic example is Benzene (C₆H₆):

• Highly stable ring with delocalised π electrons.

• Undergoes electrophilic substitution rather than addition reactions.

• Certain forms of carbon (allotrope structures like fullerenes) have delocalised systems akin to aromatics.

• Aromatic surfaces can exhibit unique adsorption properties, e.g. polycyclic aromatic hydrocarbons on environmental particulates.

Hückel's rule for aromaticity:

where is a non-negative integer.