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2. Alkanes with Carbon groups

2. Alkanes with Carbon groups. Often, hydrocarbons will contain other carbon groups attached. This hydrocarbon has 5 carbons in the main chain. H | H- CHH H H | | | | H - C - C - C - C - H | | | | H H HCH H | H.

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2. Alkanes with Carbon groups

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  1. 2. Alkanes with Carbon groups Often, hydrocarbons will contain other carbon groups attached This hydrocarbon has 5 carbons in the main chain H | H- CHH H H | | | | H - C - C - C - C - H | | | | H H HCH H | H There is a one carbon group attached to the chain A one carbon group is called Methyl 2- methyl pentane This is called H H H H H H | | | | | | H - C - C - C - C - C - C - H | | | | | | H HHCH H H H | H - C - H | H Main chain has 6 carbons A two carbon group is on #3 3- ethyl hexane

  2. Practice - Name the following hydrocarbons H | H- CHH H H H H | | | | | | H - C - C - C - C - C- C -H | | | | | | H HHCHH H H | H H | HHCH H H H H | | | | | | H - C - C - C - C - C - C - H | | | | | | H HHCH H H H | H a. b. 4-methyl heptane 2,3- dimethyl hexane H H H H H H H H | | | | | | | | H - C - C - C - C - C - C - C - C - H | | | | | | | | H H HHCH H H HCH H | | HCH H | HCH | H d. c. H | H H HCH H H H | | | | | | H - C - C - C - C - C - C - H | | | | | | H H HCH H H H | H-C-H | H 2-methyl 5-propyl octane 3-ethyl 3-methyl hexane

  3. Shortened Structural Formulas We can write the carbons in the main chain, then write what is attached to them H H H H | | | | H - C - C - C - C - H | | | | H H H H becomes CH3 CH2 CH2 CH3 and H | HHCH H H H H | | | | | | H - C - C - C - C - C - C - H | | | | | | H HHCH H H H | H CH3 | becomes CH3 CH CH CH2 CH2 CH3 | CH3

  4. Practice - Name the following compounds. CH3 | CH2 - CH2 - CH - CH2 - CH3 | CH3 3- methyl hexane A. CH3 | CH3 - CH2 - C - CH2 - CH3 | CH3 B. CH3 - CH2 - CH2 - CH - CH2 - CH2 - CH3 | CH2 | CH2 | CH3 C. 3,3- dimethyl pentane 4-propyl heptane

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