Whether meso-stilbene dibromide is optically active or not and the type symmetry element that precludes the existence of an enantiomer for meso-stilbene dibromide should be identified. Concept introduction: Optical activity refers to ability to rotate the plane polarized light. For example, if the light is passed through a substance and the light that emerges has radiations that are confined to one plane only then substance is said to be optically active. The earliest criteria for optical activity were presence of a chiral center. The chiral refer to species attached to four different substituents. Chiral center leads to exists of organic compounds as two enantiomeric forms. However chiral center alone is not sufficient condition for determination of optical activity. The criteria to identify the optical activity are to look for absence of any symmetry element. The symmetry elements make any molecule optically inactive.

Question

Want to see the full answer?

Answer 1

Question

Chapter 10.6, Problem 5E

Interpretation Introduction

Interpretation:Whether meso-stilbene dibromide is optically active or not and the type symmetry element that precludes the existence of an enantiomer for meso-stilbene dibromide should be identified.

Concept introduction:Optical activity refers to ability to rotate the plane polarized light. For example, if the light is passed through a substance and the light that emerges has radiations that are confined to one plane only then substance is said to be optically active.

The earliest criteria for optical activity were presence of a chiral center. The chiral refer to species attached to four different substituents. Chiral center leads to exists of organic compounds as two enantiomeric forms. However chiral center alone is not sufficient condition for determination of optical activity.

The criteria to identify the optical activity are to look for absence of any symmetry element. The symmetry elements make any molecule optically inactive.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Students have asked these similar questions

For each reaction shown below follow the curved arrows to complete each equationby showing the structure of the products. Identify the acid, the base, the conjugated acid andconjugated base. Consutl the pKa table and choose the direciton theequilibrium goes. However show the curved arrows. Please explain if possible.

A molecule shows peaks at 1379, 1327, 1249, 739 cm-1. Draw a diagram of the energy levels for such a molecule. Draw arrows for the possible transitions that could occur for the molecule. In the diagram imagine exciting an electron, what are its various options for getting back to the ground state? What process would promote radiation less decay? What do you expect for the lifetime of an electron in the T1 state? Why is phosphorescence emission weak in most substances? What could you do to a sample to enhance the likelihood that phosphorescence would occur over radiationless decay?

Rank the indicated C—C bonds in increasing order of bond length. Explain as why to the difference.