Unsaturated Hydrocarbons. Definiton A n unsaturated hydrocarbon is one which contains at least one double or triple bond between carbon atoms. T here.

Slides:

Advertisements

Similar presentations

Organic Chemistry IB.

Advertisements

Organic Chemistry.

Naming Hydrocarbons (nomenclature) Drawing Structures: It’s All Good 2-butene This is called the “condensed structure” CH 3 CH=CHCH 3 Using brackets.

8–1 John A. Schreifels Chemistry 212 Chapter 24-1 Chapter 24 Organic Chemistry.

Naming Hydrocarbons (nomenclature) What is a Hydrocarbon? A hydrocarbon is an organic molecule composed of carbon and hydrogen (duh). There are 3 main.

Chapter 25 Hydrocarbons.

Chapter 25 Organic and Biological Chemistry. Organic Chemistry The chemistry of carbon compounds. Carbon has the ability to form long chains. Without.

Organic Chemistry Chemistry

Carbon is unique among elements in that it can bond to other carbon atoms to form chains containing as many as several thousand atoms. Millions and Millions.

Organic Chem Class #2 OB: we’ll have a brief review of alkanes, then, master alkenes, and alkynes. At the end of today you should be able to name and draw,

Aliphatic Series Chains or Branched Chains

ORGANIC CHEMISTRY HYDROCARBONS Examples of Alkenes ETHENE, C 2 H 4 H C C H OR CH 2 CH 2 PROPENE CH 2 CH CH 3 TASK: Use ball & stick models or sketches.

Hydrocarbons. Organic Chemistry Carbon compounds (usually C+H+?) If all were removed from earth? –Look like moon with water If all were removed from our.

ALKENES AND ALKYNES. Alkenes contain one or more double bonds Alkynes contain one or more triple bonds Since alkenes and alkynes are NOT bonded to the.

Alkenes, Alkynes and aromatic compounds Hydrocarbons (contain only carbon and hydrogen) a)Saturated: (Contain only single bonds) Alkanes (C n H 2N + 2.

UNIT 3 – ORGANIC CHEMISTRY. OBJECTIVES What does Organic mean? Is “organic” always good? (or better?)

1 Chapter 12 Alkenes and Alkynes Geometric Isomers of Alkenes.

Organic Chemistry Alkenes and Alkynes. Double carbon bond Triple carbon bond.

ORGANIC CHEMISTRY CHAPTER Part 1: Alkane, Alkene, and Alkyne Part 2: Isomers.

Introduction to Hydrocarbons

Summary from Organic Chemistry Packet:

LecturePLUS Timberlake1 Alkenes and Alkynes Geometric Isomers of Alkenes Addition Reactions.

Aim: How can we name and draw hydrocarbons?

Organic Chemistry Objectives

Organic Chemistry The Chemistry of Carbon. Why call it Organic? Fewer than 200 years ago, it was thought that only living organisms could synthesize carbon.

Objectives To learn to name hydrocarbons with double and triple bonds

UNIT 5 ORGANIC CHEMISTRY What makes a compound organic? Organic compounds –Contain both carbon and hydrogen, Ex. C 6 H 12 O 6 Inorganic compounds –Do.

 Compounds in which each member differs from the one before it by the same additional unit are called a homologous series. Ex: methane, ethane, propane,

What do these have in common?

HYDROCARBONS Since carbon atoms have 4 valence shell electrons they can easily form bonds at four locations with other atoms of carbon, hydrogen, oxygen,

25-3: Hydrocarbons 25-4: Saturated and Unsaturated Hydrocarbons

Chapter 10 Carbon Chemistry Carbon and its Compounds -Most cmpnds that contain C are known as organic cmpnds -organic means “ coming from life ”

Reactions of Hydrocarbons Alkanes, alkenes, alkynes and aromatics.

Intro to organic chemistry (orgo) SCH4U – Unit B.

Hydrocarbons *Compounds with just Hydrogen and Carbon.

Ch 22: Organic Chemistry.

John Romano Zack Daniels Kate Neigish Jackie Labow

Organic Chemistry Ch. 18. Organic Chemistry Study of organic molecules: Study of organic molecules: – Hydrocarbons – Alcohols – Acids – Vitamins – Ethers.

1 SCH4U - Introduction to Organic Chemistry *S*T*A*R*R*I*N*G**S*T*A*R*R*I*N*G**S*T*A*R*R*I*N*G**S*T*A*R*R*I*N*G* ALKANES The ALKANES ALKENES The ALKENES.

Rayat Shikshan Sanstha’s Maharaja Sayajirao Vidyalaya ,Satara

II. Naming Hydrocarbons (nomenclature)

Unsaturated Hydrocarbons Hydrocarbons that don’t contain all single bonds between the carbon atoms. Alkanes are saturated hydrocarbons. They only contain.

8.1 Introduction to Titrations Organic Compounds Organic compounds contain carbon atoms, usually bonded to other carbon atoms and hydrogen atoms. They.

Unsaturated Hydrocarbons Dr. Michael P. Gillespie.

6. Organic and Biological Compounds. Organic and Biological Compounds Hydrocarbons contain only which two elements? a. carbon b. hydrogen c. oxygen d.

Carbon: More Than Just Another Element Chapter 10.

Chemistry Chapter 22 Notes #3 Alkenes and Alkynes.

22.2 Unsaturated Hydrocarbons- Alkenes and Alkynes Hydrocarbons with double, triple bonds.

Alkenes Alkenes: hydrocarbons that contain a carbon–carbon double bond. Use the same prefix as for alkane but follow by “-ene” General formula: C n H 2n.

Nomenclature Iso, Tert, cis, trans, -ane, -ene, -yne Part III.

Chapter 25 section 2 & 3.  Multiple bonds between carbons can also exist  Alkenes- hydrocarbons containing carbon-carbon double bonds  Unsaturated.

Agenda Today Lesson on Naming and Structure of: – Alkenes – Alkynes – Cis-Trans Isomers Practice Problems.

SCH4C Ms. Richardson. Alkenes  Alkenes contain less hydrogen than alkanes and are considered to be unsaturated.  All alkenes contain at least one carbon-

WARM UP 1.Write your own brief definition of the word “organic.” 2.What makes something organic?

Naming Organic Compounds Hydrocarbons These are the simplest of organic compounds. They contain only hydrogen and carbon.

Hydrocarbons Saturated Hydrocarbons – Only have single bonds Another name is alkane The alkanes hold the maximum number of hydrogen per carbon atom.

Basic Organic Chemistry

Organic Chemistry Ms.Marshall WW-P 2015.

Ch 11. Unsaturated Hydrocarbons- Alkenes and Alkynes

Lesson 1: Organic Chemistry

Unsaturated Hydrocarbons

An Intro to Organic Chemistry

Organic Chemistry IB.

Unsaturated Hydrocarbons

Ch. 22 Hydrocarbon Compounds

Chapter 12 Unsaturated Hydrocarbons

10.4 – NOTES Beyond Alkanes.

CH 7-2: Alkene & Alkyne Nomenclature

Organic Chemistry An Introduction.

Presentation transcript:

Unsaturated Hydrocarbons

Definiton A n unsaturated hydrocarbon is one which contains at least one double or triple bond between carbon atoms. T here are three kinds we will discuss: –A–Alkenes –A–Alkynes –A–Aromatics

Alkenes A lkenes have at least one double bond between carbon atoms.  bond  bond

Naming Alkenes A lkenes are named in a very similar manner to alkanes. T he same prefixes are used. R emove the –ane ending and replace it with –ene.

T he simplest alkene is ethene. I ts molecular formula is C 2 H 4.

Next… This is propene.

Four carbons or more…. T hings are a little bit more complicated when you have a four carbon alkene. T he name must identify where the double bond occurs, so the carbons are numbered.

The double bond on this molecule is located on the first carbon. This is named 1-butene.

The double bond on this molecule occurs at the second carbon. This is named 2-butene.

Notice a difference between these two molecules? These are known as geometric isomers. What is the difference?

Note how the ends of the molecule are on the SAME SIDE of the double bond. This is a cis- isomer of 2-butene. It is named cis-2-butene. Methyl groups on same side of double bond

Note how the ends of the molecule are on OPPOSITE sides of the double bond. This is a trans- isomer of 2-butene. It is named trans-2-butene. One methyl above double bond One methyl below double bond

What is the name of this alkene? Does it need a cis- or trans- designation? 1-pentene

trans-2-pentene cis-2-pentene

1-hexene

trans-2-hexene

cis-2-hexene

trans-3-hexene cis-3-hexene

What about more than one double bond??? This is 2,4-hexdiene

And cyclic alkenes too???? cyclopropene

1,3-cyclopentadiene!

trans-1-chloro-propene

3-bromo-1,4-cyclohexadiene

4-chloro-cis-2-pentene

This is an alkyne. It has a triple bond between the carbon atoms. Take the –ene ending from an alkene and change it to –yne. This is ethyne.

2-butyne 1-butyne

What would you name this compound? 1,3,5-cyclohexatriene? Wouldn’t you like a name that’s a little easier on the brain?

This is benzene. It is often represented like this. Note the alternating double- single bonds.

Benzene is classified as an aromatic compound. Aromatic compounds have structures with alternating double and single bonds. Most contain a benzene ring. Here are a few you should recognize and KNOW:

Napthalene Anthracene (The main ingredient in mothballs.) One of the first identified carcinogens.

In the 1800’s, doctors in Great Britain noted a significant number of chimney sweeps developed scrotal cancer. The incidence of cancer was linked to exposure to the soot in chimneys. A major component of soot is anthracene.