The carbon-carbon double bond should be labeled as cis or trans and IUPAC name of the alkene should be identified. Concept Introduction: Alkenes are hydrocarbon molecules that consist a carbon-carbon double bond which has the general formula of C n H 2 n . Cis-trans isomers are fall under geometric isomerism. Cis isomers- two different groups are on the same side of the double bond. Trans isomers- two different groups are on opposite sides of the double bond. In alkene nomenclature, longest C chain will be considered as the parent/ main C chain. At the end of the alkane suffix -ene is added.Longest chain which includes the carbon-carbon double bond will considered as the main carbon chain. Numbering of the main C chain is starting from the first substituent by giving the lower number to that substituent and as well as the double bond should get the lower number. All the substituents should be numbered and named. Two or more identical substituents should be indicated by using appropriate prefixes as di-. Names of the substituents should be alphabetized. Each substituent should have a position number which is mentioned in the main C chain.

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Chapter 13, Problem 43P

Interpretation Introduction

Interpretation:

The carbon-carbon double bond should be labeled as cis or trans and IUPAC name of the alkene should be identified.

Concept Introduction:

Alkenes are hydrocarbon molecules that consist a carbon-carbon double bond which has the general formula of CnH2n.

Cis-trans isomers are fall under geometric isomerism.

Cis isomers- two different groups are on the same side of the double bond.

Trans isomers- two different groups are on opposite sides of the double bond.

In alkene nomenclature, longest C chain will be considered as the parent/ main C chain. At the end of the alkane suffix -ene is added.Longest chain which includes the carbon-carbon double bond will considered as the main carbon chain. Numbering of the main C chain is starting from the first substituent by giving the lower number to that substituent and as well as the double bond should get the lower number. All the substituents should be numbered and named. Two or more identical substituents should be indicated by using appropriate prefixes as di-. Names of the substituents should be alphabetized. Each substituent should have a position number which is mentioned in the main C chain.

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