Naming hydrocarbons

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  • Created by: racheon
  • Created on: 13-04-14 14:45
Define nomenclature.
A system of naming compounds.
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Define alkyl group.
An alkane with a hydrogen removed, often shown as R.
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Why is it important that each organic compound has its own name?
Because there are over 10 million of them.
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Who developed the organic nomenclature and what is it called?
The International Union of Pure and Applied Chemistry, and it's know as the IUPAC system.
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What must you be able to do when it comes to naming compounds?
Name them from structures, and draw molecules from their names.
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What are organic molecules typically made up of?
A carbon chain and a side chain, alkyl group, or 1 or more functional group.
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What does the stem of the name of a compound indicate?
The number of carbon atoms in the longest chain.
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Where are prefixes and suffixes added to the name?
A prefix is added before the stem, a suffix is added after.
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Name the stem name and alkyl group name for 1-10 carbons.
1: meth-, methyl. 2: eth-, ethyl. 3: prop-, propyl. 4: but- butyl. 5: pent-, pentyl. 6: hex-, hexyl. 7: hept-, heptyl. 8: oct-, octyl. 9: non-, nonyl. 10: dec-, decyl.
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Why are alkanes the simplest compounds to name?
They all end with the suffix -ane.
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What type of hydrocarbon is an alkene?
An unsaturated hydrocarbon.
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How do you name an alkene?
By following similar steps to naming alkanes, but the suffix is -ene, the position of the double bond has to be stated if it has 4 or more carbons, and you use the smallest number for the position.
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Describe a molecule of but-1-ene.
It has 4 carbons in the longest chain, it has a double bond between carbons 1 and 2, it's an alkene.
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Draw 2,2-dimethylbutane.
4 carbons, 1 and 4 have 3 hydrogens, 3 has 2 hydrogens and 2 has 2 CH₃ groups.
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How do you separate numbers and words in organic compound names?
Separate numbers by commas and place hyphens between numbers and words.
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What would the name of CH₃CH(CH₃)CH₂CH₃ be?
1. Identify the longest carbon chain: 4, so the parent compound is butane. 2. Number the carbon to which the alkyl group is attached: 2nd, so it's indicated by the prefix 2-methyl. 3. Put the 2 parts together: 2-methylbutane.
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Other cards in this set

Card 2

Front

Define alkyl group.

Back

An alkane with a hydrogen removed, often shown as R.

Card 3

Front

Why is it important that each organic compound has its own name?

Back

Preview of the front of card 3

Card 4

Front

Who developed the organic nomenclature and what is it called?

Back

Preview of the front of card 4

Card 5

Front

What must you be able to do when it comes to naming compounds?

Back

Preview of the front of card 5
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