Are n-Pentane and Cyclobutane are NON AROMATIC? Explain why.
Answers
Answer:
Explanation:In organic chemistry, hydrocarbons (compounds composed of carbon and hydrogen) are divided into two classes: aromatic compounds and aliphatic compounds (/ˌælɪˈfætɪk/; G. aleiphar, fat, oil), also known as non-aromatic compounds. Aliphatics can be cyclic, but if a unique type of especially stable cyclic bond exists in the molecule, called a benzene ring, then it is considered to be an aromatic compound.[1] Aliphatic compounds can be saturated, like hexane, or unsaturated, like hexene and hexyne. Open-chain compounds (whether straight or branched) contain no rings of any type, and are thus aliphatic.
Answer:
Explanation:
[Each atom can contribute a maximum of one orbital and two electrons towards aromaticity]. The other lone pair is in the plane of the ring, much like the lone pair on the nitrogen of pyridine, above. Therefore thiophene has six pi electrons total, which is a Huckel number, and thiophene is aromatic