Iso neo sec tert là gì

     
Common name: A nomenclature system useful for naming simple organic molecules. It often fails for more complex molecules, in which case systematic or (better yet) IUPAC nomenclature is preferable.
The prefix "n-" (or normal) is used when all carbons size a continuous, unbranched (linear) chain. If a functional group (such as an alcohol) is present that functional group is on the over of the chain. Not to lớn be confused with "nor", which indicates a missing methyl group.

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Common name: n-pentane IUPAC name: pentane Common name: n-pentanol IUPAC name: 1-pentanol
The prefix "iso
" is used when all carbons except one size a continuous chain. This one carbon is part of an isopropyl group at the kết thúc of the chain.

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Common name: isopentane IUPAC name: 2-methylbutane Common name: isopentyl alcohol IUPAC name: 3-methyl-1-butanol
"Iso" can also indicate that the molecule is an constitutional isomer of another molecule with a common (or trivial) name.
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Common name: phthalic acid IUPAC name: benzene-1,2-dicarboxylic acid Common name: isophthalic acid IUPAC name: benzene-1,3-dicarboxylic acid
The prefix "neo
" is used when all but two carbons khung a continuous chain, & these two carbons are part of a terminal tert-butyl group.

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Common name: neopentane IUPAC name: 2,2-dimethylpropane Common name: neopentyl alcohol IUPAC name: 2,2-dimethyl-1-propanol

The prefix "sec
" or "s" is used when the functional group is bonded lớn a secondary carbon. This prefix is only useful for a four-carbon chain. It is not applicable with a shorter chain, và it is often ambiguous when the chain has five or more carbons.