What is the structure of an aromatic compound?
Aromatic compounds are cyclic structures in which each ring atom is a participant in aπ bond, resulting in delocalized π electron density on both sides of the ring. Due to this connected network of π bonds, the rings are planar, unlike the boat or table structures typical of cycloalkanes.
What are aromatic hydrocarbons Class 11?
Hydrocarbons and their alkyl, alkenyl and alkynyl derivatives which contain one or more benzene rings either fused or isolated in their molecules are called aromatic hydrocarbons. Aromatic hydrocarbons containing a benzene ring are called benzenoids, those not containing a benzene ring are called non-benzenoids.
What is naphthalene structure?
C10H8
Naphthalene/Formula
Which is the following structure of naphthalene *?
It is the simplest polycyclic aromatic hydrocarbon, and is a white crystalline solid with a characteristic odor that is detectable at concentrations as low as 0.08 ppm by mass. As an aromatic hydrocarbon, naphthalene’s structure consists of a fused pair of benzene rings.
What are the examples of aromatic compounds?
Aromatic Heterocycles
| Compound | Reaction with Br2 | Thermodynamic Stabilization |
|---|---|---|
| Benzene | Substitution | Large |
| Pyridine | Substitution | Large |
| Furan | Substitution ( 0 ºC ) | Moderate |
| Pyrrole | Substitution | Moderate |
What are the four structural considerations of a compound to be considered aromatic?
1. Four Key Rules For Aromaticity
- First, it must be cyclic.
- Second, every atom in the ring must be conjugated.
- Third, the molecule must have [4n+2] pi electrons (we’ll explain in depth what that means, below)
- Fourth, the molecule must be flat (usually true if conditions 1-3 are met, but there are rare exceptions)