E-StoreTYPES OF ISOMERISM !!.......click it na.......c'mon do it fast !!....life can't wait !!!
2 Mar 2008 13:40:41 IST
TYPES OF ISOMERISM !!.......click it na.......c'mon do it fast !!....life can't wait !!!
The existence of two or more compounds with same molecular formula but different properties (physical, chemical or both) is known as isomerism; and the compounds themselves are called isomers..........
i) Chain, nuclear or skeleton isomerism:
This type of isomerism is due to the difference in the nature of the carbon chain (i.e. straight or branched) which forms the nucleus of the molecule,
ii) Position isomerism:
It is due to the difference in the position of the substituent atom or group or an unsaturated linkage in the same carbon chain.
iii) Functional isomerism:
This type of isomerism is due to difference in the nature of functional group present in the isomers,
iv) Metamerism:
It is due to the difference in nature of alkyl groups attached to the same functional group. This type of isomerism is shown by compounds of the same homologous series.
v) Tautomerism:
Tautomerism may be defined as the phenomenon in which a single compound exists in two readily interconvertible structures that differ markedly in the relative position of at least one atomic nucleus, generally hydrogen. The two different structures are known as tautomers of each other.
Stereo isomerism:
When isomers have the same structural formula but differ in relative arrangement of atoms or groups in space within the molecule, these are known as stereoisomers and the phenomenon as stereoisomerism. The spatial arrangement of atoms or groups is also referred to as configuration of the molecule and thus we can say that the stereoisomers have the same structural formula but different configuration. Stereoisomerism is of two types.
(i) Geometrical isomerism:
The isomers which possess the same structural formula but differ in the spatial arrangement of the groups around the double bond are known as geometrical isomers and the phenomenon is known as geometrical isomerism.
ii) Optical isomerism:
This type of isomerism arises from different arrangements of atoms or groups in three dimensional space resulting in two isomers which are mirror image of each other. Optical isomers contain an asymmetric (chiral) carbon atom ( a carbon atom attached to four different atoms or groups) in their molecules.
This type of isomerism is due to the difference in the nature of the carbon chain (i.e. straight or branched) which forms the nucleus of the molecule,
ii) Position isomerism:
It is due to the difference in the position of the substituent atom or group or an unsaturated linkage in the same carbon chain.
iii) Functional isomerism:
This type of isomerism is due to difference in the nature of functional group present in the isomers,
iv) Metamerism:
It is due to the difference in nature of alkyl groups attached to the same functional group. This type of isomerism is shown by compounds of the same homologous series.
v) Tautomerism:
Tautomerism may be defined as the phenomenon in which a single compound exists in two readily interconvertible structures that differ markedly in the relative position of at least one atomic nucleus, generally hydrogen. The two different structures are known as tautomers of each other.
Stereo isomerism:
When isomers have the same structural formula but differ in relative arrangement of atoms or groups in space within the molecule, these are known as stereoisomers and the phenomenon as stereoisomerism. The spatial arrangement of atoms or groups is also referred to as configuration of the molecule and thus we can say that the stereoisomers have the same structural formula but different configuration. Stereoisomerism is of two types.
(i) Geometrical isomerism:
The isomers which possess the same structural formula but differ in the spatial arrangement of the groups around the double bond are known as geometrical isomers and the phenomenon is known as geometrical isomerism.
ii) Optical isomerism:
This type of isomerism arises from different arrangements of atoms or groups in three dimensional space resulting in two isomers which are mirror image of each other. Optical isomers contain an asymmetric (chiral) carbon atom ( a carbon atom attached to four different atoms or groups) in their molecules.
hope it helps..........
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....!!!ur comments awaited more than ur rates !!!..........
Comments (19)
aNdRoMeDa
Blazing goIITian
Joined: 10 Sep 2007 10:41:19 IST
Posts: 1319
2 Mar 2008 14:31:26 IST
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oye deer gud yaar chem padhne lag gaye .............
2 Mar 2008 17:36:55 IST
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Some examples wud have made it excellent.....but anyways its good.......
3 Mar 2008 10:05:47 IST
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Though you have not given examples but it is an important topic
22 May 2008 21:04:11 IST
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i like the heading better than the content
"click it na.......c'mon do it fast !!....life can't wait !!!"
"click it na.......c'mon do it fast !!....life can't wait !!!"
23 May 2008 08:17:10 IST
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0 people liked this
gud job....bt plz add their further subdivisions vd eg......
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