The possible stereoisomers for the given compound has to be drawn. Concept introduction: Cis-trans isomerism : In a compound with a Carbon-Carbon double bond, geometric isomerism is possible. The plane which is perpendicular to the pi-orbitals is considered the reference. There are a total of four substituents, two each at either of the carbons indulged in the double bond. When two of the heaviest substituents are oriented on the same side of the reference plane, the geometric isomer is termed a ‘cis’-isomer. When two of the heaviest substituents are oriented on the opposite sides of the reference plane, the geometric isomer is termed a ‘trans’-isomer. Geometric isomers: Two atoms with the same side location of the double bond are called cis isomers and two atoms with opposite side locations of the double bond are called Trans isomers. The stereoisomerism is the arrangement of atoms in molecules whose connectivity remains the same but their arrangement in different in each isomer. The two molecules are described as stereoisomers if they are made of the same atoms connected in the same sequence, but the atoms are positions differently in space. Chiral centre: A chiral center is defined as the tetrahedral carbon atom in an organic molecule that is connected to four non-identical groups/substituents. It is sometimes known as a stereo genic center. T o t a l n u m b e r o f s t e r e o i s o m e r s = 2 n " n " i s t h e n u m b e r o f c h i r a l c a r b o n s

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Chapter 5, Problem 68IP

Interpretation Introduction

Interpretation:

The possible stereoisomers for the given compound has to be drawn.

Concept introduction:

Cis-trans isomerism: In a compound with a Carbon-Carbon double bond, geometric isomerism is possible. The plane which is perpendicular to the pi-orbitals is considered the reference. There are a total of four substituents, two each at either of the carbons indulged in the double bond.

When two of the heaviest substituents are oriented on the same side of the reference plane, the geometric isomer is termed a ‘cis’-isomer.

When two of the heaviest substituents are oriented on the opposite sides of the reference plane, the geometric isomer is termed a ‘trans’-isomer.

Geometric isomers: Two atoms with the same side location of the double bond are called cis isomers and two atoms with opposite side locations of the double bond are called Trans isomers.

The stereoisomerism is the arrangement of atoms in molecules whose connectivity remains the same but their arrangement in different in each isomer.

The two molecules are described as stereoisomers if they are made of the same atoms connected in the same sequence, but the atoms are positions differently in space.

Chiral centre: A chiral center is defined as the tetrahedral carbon atom in an organic molecule that is connected to four non-identical groups/substituents. It is sometimes known as a stereo genic center.

Total number of stereoisomers = 2n"n" is the number of chiral carbons

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