What are aromatic and aliphatic compounds?
Aromatic compounds : – An aromatic compound contains a set of covalently-bound atoms with specific characteristics: 1. A delocalized conjugated π system, most commonly an arrangement of alternating single and double bonds 2. Coplanar structure, with all the contributing atoms in the same plane 3. Contributing atoms arranged in one or more rings 4. A number of π delocalized electrons that is even, but not a multiple of 4. This is known as Hückel’s rule. Permissible numbers of π electrons include 2, 6, 10, 14, and so on 5. Special reactivity in organic reactions such as electrophilic aromatic substitution and nucleophilic aromatic substitution Aliphatic compounds : – In chemistry, aliphatic compounds are organic compounds in which carbon atoms are joined together in straight or branched chains or in rings, that can be either saturated or unsaturated, but not aromatic. The simplest aliphatic compound is methane (CH4). Aliphatics include not only the fatty acids and other derivatives of pa
