Nomenclature isomers and molecule shapes
This presentation is the property of its rightful owner.
Sponsored Links
1 / 8

Nomenclature, Isomers and Molecule Shapes. PowerPoint PPT Presentation


  • 51 Views
  • Uploaded on
  • Presentation posted in: General

Nomenclature, Isomers and Molecule Shapes. Nomenclature. ...How many carbons are there in the chain? ...What is the functional group? ...Where is the functional group? Count from the end which gives you the lowest number for the position of the functional group.

Download Presentation

Nomenclature, Isomers and Molecule Shapes.

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.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Nomenclature isomers and molecule shapes

Nomenclature, Isomers and Molecule Shapes.


Nomenclature

Nomenclature...

  • ...How many carbons are there in the chain?

  • ...What is the functional group?

  • ...Where is the functional group?

  • Count from the end which gives you the lowest number for the position of the functional group.


Functional groups

No functional group = alkane.

Double bond = alkene.

Functional Groups...


Chain isomers

Chain Isomers

C – C – C – C --- butane.

C – C – C --- methyl-propane.

|

C

C –C – C – C – C ---pentane. C

|

C – C – C – C ---methyl-butane. C – C – C ---dimethyl-propane

| |

C C


Positional isomers

Positional Isomers

C – C – C – C – C --- pentan-3-ol

|

OH

C – C – C – C – C ---pentan-1-ol

|

OH

C – C – C --- 1-bromopropane

|

Br

C – C – C --- 2-bromopropane

|

Br

Alcohol = ol.


Shapes of molecules

@

|

0

/ \

@ @

Three bonding pairs.

Trigonal Planar.

120 degree bond angle.

Shapes of Molecules

@ – @ – @

Two bonding pairs.

Linear.

180 degree bond angle.

@

|

@

/ \

@ @

Four bonding pairs.

Tetrahedral.

109.5 degree bond angle.

@

|

@ – @

|

@

Five bonding pairs.

Trigonal bipyramidal.

90 and 120 degree bond angles.

@

@

@


Shapes of molecules cont

Shapes of Molecules cont.

@

|

@

|

@

Six bonding pairs.

Octahedral.

90 degree bond angle.

@

@

@

@

LP-LP repulsion > LP-BP repulsion > BP-BP repulsion.


  • Login