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What is the correct chemical name for the following structures pictured below?

What Is The Correct Chemical Name For The Following Structures Pictured Below class=
What Is The Correct Chemical Name For The Following Structures Pictured Below class=
What Is The Correct Chemical Name For The Following Structures Pictured Below class=
What Is The Correct Chemical Name For The Following Structures Pictured Below class=
What Is The Correct Chemical Name For The Following Structures Pictured Below class=

Sagot :

The IUPAC names of the given compounds are 3-methylpentane, 1,3-butadiene, 1,3-dimethylcyclohexane, 2,3,5,5-tetramethyl-1,3-hexadiene, and 2,2-dimethylpentane respectively.

What are the IUPAC nomenclature rules?

  • Find the longest continuous carbon chain. This chain is called a parent chain.
  • Identify all the substituents attached to the parent chain.
  • Number the carbon atoms from the end which gives the substituents the lowest number.
  • If the substituent occurs more than one then the location of each point is given and the number of times the substituent occurs is indicated by a prefix like di, tri, tetra, and so on.
  • Double bonds are always given preference. Give the double bond as low a number as possible.
  • If there are two chains of equal lengths then choose the chain that has
  1. greatest numbers of side chains
  2. chain whose substituents have the lowest number
  3. having least branched side chains
  • A cyclic (ring) hydrocarbon is represented by the prefix cyclo- which appears in front of the base name.

Thus, following the IUPAC nomenclature rules the name of the given compounds are as follows:

3-methylpentane

1,3-butadiene

1,3-dimethylcyclohexane

2,3,5,5-tetramethyl-1,3-hexadiene

and 2,2-dimethylpentane

Learn more about IUPAC nomenclature:

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