Question

N 2. Complete the chart: CONDENSED FORMULA STRUCTURAL FORMULA NAME CH,CH2CHCHCH(CH3)2 CHC(CH2)SCH,CI (CH3)3CCHCH(CH2)2CHCH2

Answer 1

A structural formula shows all atoms in the compound and the bonds between them through line-connections.

The naming of a molecule is done according to IUPAC nomenclature.

1)

Condensed formula: CH_{​​​​​3}​​​ CH_{​​​​​2} CHCHCH(CH_​3 )₂

Structural formula :

According to the lowest sum locant rule, we apply first point difference to number the carbon chain.

Thus, the carbon chain is numbered such as to locate the functional groups and substituents at lowest possible numbered carbons.

Hence, its IUPAC name is 2-Methylhex-3-ene.

2)

Condensed formula: CHC(CH_{​​​​​2} )₅ CH_{​​​​​2} Cl

Structural formula:

Alkyne as a functional group has higher priority compared to halogens (chlorine here) .

Thus, the IUPAC name is 8-Chlorooct-1-yne.

3)

Condensed formula: (CH_{​​​​​3} )₃ CCHCH(CH_{​​​​​2}​ )₂ CH CH_{​​​​​2}

Structural formula:

Alkene functional group holds priority over methyl and is assigned lowest possible number.

Thus, the IUPAC name is 7,7-Dimethyl-1,5-octdiene.

The table is completed as follows:

CONDENSED FORMULA STRUCTURAL FORMULA NAME CH₃ CH₂ CH CH CH (CH) H - Hн Н Н-С - Н т- 2-Methylhex - 3-ene Н - С-С – С – С.- С.- Н н Н H – C-H Н CHC(CH2), CH2U н ннннн H— С=с-с-с-с-с-с-с-а - Chlorooct- 1 - ние Hнн Н н Н (CH3)₃ C CH CH (CH2)₂ CH CH₂ Н Н 1 н н--н н н н н Н Н – С – С – С – С-с-с-с-с. 7,7-Dimethyl-1,5-octdiene 1 Н H-1-Н ин H Н

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