1 / 10

Aromatic Hydrocarbons

Aromatic Hydrocarbons. C 6 H 6. Aromatic compounds contain a benzene ring(C 6 H 6 ) It is a very stable structure that is very hard to break. The most common reaction it undergoes is a substitution reaction. The hydrogens are switched for other substituents.

shika
Download Presentation

Aromatic Hydrocarbons

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Aromatic Hydrocarbons

  2. C6H6 • Aromatic compounds contain a benzene ring(C6H6) • It is a very stable structure that is very hard to break. • The most common reaction it undergoes is a substitution reaction. The hydrogens are switched for other substituents.

  3. All benzene bonds between carbons in the ring are “a bond and a half”. Double bonds are very reactive. They will gladly accept another bond because they are unsaturated. For this reason, it is like there are no double bonds.   Resonance

  4. Benzene is a chemical that is a colorless or light yellow liquid at room temperature. • It has a sweet odor and is highly flammable. • Benzene evaporates into the air very quickly. • It is heavier than air. • Natural sources of benzene include volcanoes and forest fires. • Benzene is also a natural part of crude oil, gasoline, and cigarette smoke.

  5. Industries use benzene to make other chemicals, plastics, resins, nylon, synthetic fibers, lubricants, rubbers, dyes, detergents, drugs, and pesticides. • Benzene is damaging to our circulatory system, particularly the blood. • Benzene causes cancer in humans.

  6. CH3 CH3 1,2-dimethylbenzene Orthodimethylbenzene O-dimethylbenzene We draw it like this. CH3 CH3 1,3-dimethylbenzene Metadimethylbenzene M-dimethylbenzene 1,4-dimethylbenzene Paradimethylbenzene P-dimethylbenzene CH3 CH3 Cl Cl 1,2-dichloro-4-methylbenzene 1,2,3-trichloro-5-ethyl-4-methylbenzene Cl Cl CH3CH2 Cl CH3 CH3

  7. Other forms of Benzene Rings

  8. Sometimes a benzene is a substituent • It is then called a phenyl. • 3-ethyl-2,3-diphenyl pentane • 3,3,4,4 tetrabromo-5,5-diphenyl-1-hexene

  9. Naphthalene has two rings How many hydrogen in this compound? Draw it. If every carbon has 4 bonds, each carbon has one double bond. The formula is C10H8 .l .

  10. The numbering system works like this: Notice the carbons in the centre are not numbered. Why?

More Related