Energy diagram for different conformations of 2,2-dimethylpropane should be sketched and check the resemblance with the energy diagram for ethane and butane. Concept introduction: Conformational analysis is the study of energy verses different conformers . Conformers arise due to the free rotation of C − C bond. This rotation are measured by dihedral angle , it is the angle between two atoms attached to two different carbons of C − C rotation in Newman projection. Newman projection: Newman projection of molecule is one type of representations for the alkanes , where the projection visualization from one carbon to another carbon. In this Newman projection, front carbon which represented as dot is called proximal and the back carbon which represented as circle is called distal. The most and least energy occupied conformers are eclipsed and staggered , which are having a dihedral of ‘0’ and ‘60’ degree respectively. In ethane all the atoms attached to a carbon atom is same, so the energy levels of different eclipsed conformers and staggered conformers are degenerated . In butane different atoms are attached to a carbon atom, so the energy levels of eclipsed conformers and staggered conformers are not degenerated. To find: the energy diagram for conformational analysis of 2,2-dimethylpropane is resemble with the energy diagram for ethane or butane conformations.

Question

Want to see the full answer?

Answer 1

Question

Chapter 4, Problem 41PP

Interpretation Introduction

Interpretation:

Energy diagram for different conformations of 2,2-dimethylpropane should be sketched and check the resemblance with the energy diagram for ethane and butane.

Concept introduction:

Conformational analysis is the study of energy verses different conformers. Conformers arise due to the free rotation of C−C bond. This rotation are measured by dihedral angle, it is the angle between two atoms attached to two different carbons of C−C rotation in Newman projection.

Newman projection: Newman projection of molecule is one type of representations for the alkanes, where the projection visualization from one carbon to another carbon. In this Newman projection, front carbon which represented as dot is called proximal and the back carbon which represented as circle is called distal.

The most and least energy occupied conformers are eclipsed and staggered, which are having a dihedral of ‘0’ and ‘60’ degree respectively.

In ethane all the atoms attached to a carbon atom is same, so the energy levels of different eclipsed conformers and staggered conformers are degenerated.

In butane different atoms are attached to a carbon atom, so the energy levels of eclipsed conformers and staggered conformers are not degenerated.

To find: the energy diagram for conformational analysis of 2,2-dimethylpropane is resemble with the energy diagram for ethane or butane conformations.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Students have asked these similar questions

Draw the product of the reaction shown below. Ignore inorganic byproducts. H conc. HBr Drawing Q

Calculate the atomic packing factor of diamond knowing that the number of Si atoms per cm3 is 2.66·1022 and that the atomic radii of silicon and oxygen are, respectively, 0.038 and 0.117 nm.

A pdf file of your hand drawn, stepwise mechanisms for the reactions. For each reaction in the assignment, you must write each mechanism three times (there are 10 reactions, so 30 mechanisms). (A) do the work on a tablet and save as a pdf., it is expected to write each mechanism out and NOT copy and paste the mechanism after writing it just once. Everything should be drawn out stepwise and every bond that is formed and broken in the process of the reaction, and is expected to see all relevant lone pair electrons and curved arrows. Aldol: NaOH HO H Δ NaOH Δ