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What is the correct designation of this alkene? cis o trans

What is the correct designation of this alkene? cis o trans

Biochemistry
Biochemistry
9th Edition
ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Chapter1: Biochemistry: An Evolving Science
Section: Chapter Questions
Problem 1P
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Title: Identifying Alkene Geometrical Isomerism **Question:** What is the correct designation of this alkene? **Diagram:** The image presents the structural formula of an alkene, a type of hydrocarbon that contains at least one carbon-carbon double bond. The double bond is depicted as a set of two parallel lines within a zigzag pattern of single bonds (representing the carbon chain). The given structure is a chain of carbon atoms with a double bond between the second and third carbon atoms. **Options:** - ○ **cis** - ○ **trans** **Explanation:** In organic chemistry, alkenes can be classified into two geometrical isomers: **cis** and **trans**. This is based on the relative position of the substituent groups (the hydrogen atoms in this simple case) around the double bond. - **Cis-Isomer:** If the substituents on the double-bonded carbons are on the same side, the isomer is referred to as **cis**. - **Trans-Isomer:** If the substituents on the double-bonded carbons are on opposite sides, the isomer is referred to as **trans**. To determine the correct designation for this alkene, observe the positions of the alkyl groups attached to the carbons in the double-bond: - If the two largest substituents (typically the larger carbon chains in more complex molecules) on the double-bonded carbons are oriented on the same side, it is a **cis** isomer. - If they are on opposite sides, it is a **trans** isomer. Using the structure in the diagram, analyze the placement of the carbon chain around the double bond to identify if it follows the cis or trans configuration. **Answer:** Based on the given structure, the correct designation for this alkene is: - ○ **trans**
Transcribed Image Text:Title: Identifying Alkene Geometrical Isomerism **Question:** What is the correct designation of this alkene? **Diagram:** The image presents the structural formula of an alkene, a type of hydrocarbon that contains at least one carbon-carbon double bond. The double bond is depicted as a set of two parallel lines within a zigzag pattern of single bonds (representing the carbon chain). The given structure is a chain of carbon atoms with a double bond between the second and third carbon atoms. **Options:** - ○ **cis** - ○ **trans** **Explanation:** In organic chemistry, alkenes can be classified into two geometrical isomers: **cis** and **trans**. This is based on the relative position of the substituent groups (the hydrogen atoms in this simple case) around the double bond. - **Cis-Isomer:** If the substituents on the double-bonded carbons are on the same side, the isomer is referred to as **cis**. - **Trans-Isomer:** If the substituents on the double-bonded carbons are on opposite sides, the isomer is referred to as **trans**. To determine the correct designation for this alkene, observe the positions of the alkyl groups attached to the carbons in the double-bond: - If the two largest substituents (typically the larger carbon chains in more complex molecules) on the double-bonded carbons are oriented on the same side, it is a **cis** isomer. - If they are on opposite sides, it is a **trans** isomer. Using the structure in the diagram, analyze the placement of the carbon chain around the double bond to identify if it follows the cis or trans configuration. **Answer:** Based on the given structure, the correct designation for this alkene is: - ○ **trans**
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