somer From Wikipedia, the free e

ke stereoisomers, enantiomers, geometrical isomers, etc. (see chart below). There are two main forms of isomerism: structural isomerism and stereoisomerism (spatial isomerism).
Contents [hide]
1 Forms
1.1 Structural isomers
1.2 Stereoisomers
2 Isomerisation
2.1 Instances of Isomerization
3 Examples
3.1 Propanol
3.2 Synthesis of fumaric acid
4 History
5 Other types of isomerism
6 See also
7 References
8 External links
[edit]Forms

[edit]Structural isomers
Main article: Structural isomer


The different types of isomers, including position isomers 2-fluoropropane and 1-fluoropropane on the left
In structural isomers, sometimes referred to as constitutional isomers, the atoms and functional groups are joined together in different ways. Structural isomers have different IUPAC names and may or may not belong to the same functional group.[2] This group includes chain isomerism whereby hydrocarbon chains have variable amounts of branching; position isomerism which deals with the position of a functional group on a chain; and functional group isomerism in which one functional group is split up into different ones.
For example, two position isomers would be 2-fluoropropane and 1-fluoropropane, illustrated on the right.
In skeletal isomers the main carbon chain is different between the two isomers. This type of isomerism is most identifiable in secondary and tertiary alcohol isomers.
Tautomers are structural isomers of the same chemical substance that spontaneously interconvert with each other, even when pure. They have different chemical properties, and consequently, distinct reactions characteristic to each form are observed. If the interconversion reaction is fast enough, tautomers cannot be isolated from each other. An

astro
geschenke