chemistry

TYPES OF ISOMERISM PART-1

Two or more compounds having the same molecular formula but different physical and chemical properties are called isomers and this phenomenon is called isomerism.

Chain isomerism: When two or more compounds having same molecular formula but different carbon skeletons are referred to as chain isomers.

 Position Isomerism : Compounds which have the same structure of carbon chain but differ in position of double or triple bonds or functional group are called position isomers and this phenomenon is called Position Isomerism. e g

CH₃-CH₂-CH=CH₂                     CH₃-CH = CH – CH₃

Functional Isomerism :Compounds which have the same molecular formula butdifferent functional group are called functional isomers and this phenomenon is called functional Isomerism. e g

CH₃ – CH₂ – OH             CH₃ – O – CH₃

Metamerism:It is due to the presence of different alkyl groups on either side of functional group in the molecule. Ex. C₄H₁₀O represents C₂H₅OC₂H₅and CH₃OC₃H₇.