How many isomers can be formed from C7H16?

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SUMMARY

The molecular formula C7H16 can form nine distinct isomers, as confirmed by multiple contributors in the discussion. The isomers include straight-chain and branched structures, with no optical isomers due to the absence of chiral centers. A mathematical approach to finding isomers involves visualizing carbon arrangements and applying the formula for unsaturation, (2C + 2 - H - X + N)/2, to determine the degree of unsaturation. The discussion emphasizes the importance of structural visualization and systematic drawing to identify all possible isomers.

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  • Understanding of hydrocarbon structures and nomenclature
  • Familiarity with the concept of isomerism in organic chemistry
  • Knowledge of the formula for calculating unsaturation in organic compounds
  • Basic skills in drawing chemical structures
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  • Research the different types of isomers, including structural and stereoisomers
  • Learn to apply the unsaturation formula (2C + 2 - H - X + N)/2 to various hydrocarbons
  • Explore the concept of chirality and its implications for optical isomers
  • Study advanced topics in organic chemistry, such as the effects of substituents on isomer formation
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Chemistry students, organic chemists, and educators seeking to deepen their understanding of hydrocarbon isomerism and structural analysis.

  • #31
why can't we name it 3-ethyl, butane?

c – c – c – c – c
|
c
|
c
 
Last edited:
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  • #32
Because it wouldn't make sense. If anything, 1-ethyl-butane sounds better. Unless you are asking about different molecule which has been garbled by ASCII - try to post it as http://www.epa.gov/med/Prods_Pubs/smiles.htm.

It is heptane. Look for the longest straight chain.

The idea is to make name unique, your approach will give many names to the same molecule - like 1-methylhexane, 1-ethylpentane, 1-propylbutane, ore even 1,5-dimethylpentane.
 
  • #33
sorry, but i typed the ethyl was in the third position. i just don't know why it became like that
 
  • #34
Formatting with empty spaces never works correctly.

My other remark (about name uniqueness) still holds.
 

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