Question
Asked Jun 6, 2019

draw the most stable conformation of

(a) ethylcyclohexane

(b) 3-isopropyl-1,1-dimethylcyclohexane

check_circleExpert Solution
Step 1

Conformations: Rotation about C-C single bonds allows a compound to adopt a variety of possible three-dimensional shapes.

Drawing Axial and Equatorial substituents:

 

Each carbon in cyclohexane can bear two substituents. One group is said to occupy an axial position, which is parallel to a vertical axis passing through the center of the ring. The other group is said to occupy an equatorial position, which is positioned approximately along the equator of the ring.

Drawing Axial and Equatorial substituents:
x Axial
YEquatorial
help_outline

Image Transcriptionclose

Drawing Axial and Equatorial substituents: x Axial YEquatorial

fullscreen
Step 2

Ethylcyclohexane:

 

In general larger substituent at axial position is less stable and sterically disfavoured. Lar...

EthyIcyclohexane
Equatorial
Axial
Equatorial position is more
stable confomation
The equatorial position oflarger ethyl group is strongly favoured. The axial position of larger
ethyl group is disfavoured.
help_outline

Image Transcriptionclose

EthyIcyclohexane Equatorial Axial Equatorial position is more stable confomation The equatorial position oflarger ethyl group is strongly favoured. The axial position of larger ethyl group is disfavoured.

fullscreen

Want to see the full answer?

See Solution

Check out a sample Q&A here.

Want to see this answer and more?

Solutions are written by subject experts who are available 24/7. Questions are typically answered within 1 hour*

See Solution
*Response times may vary by subject and question
Tagged in

Science

Chemistry

General Chemistry

Related Chemistry Q&A

Find answers to questions asked by student like you

Show more Q&A add
question_answer

Q: Formula Molar mass of element/ion   Moles    Mass O: F: dioxygen difluoride.   X Mol  =   Cati...

A: Mass of the given compounds can be calculated as,

question_answer

Q: 5. Whose postulates account for the line spectrum of an atom? a. Thomson b. de Broglie c. Heisenberg...

A: According to Thomson's  model, an atom is similar to a spherically- shaped plum pudding and this mod...

question_answer

Q: In the molecule depicted by the structure shown below, Br 1 5 2 4 3 identify the carbon atoms which ...

A: The structue of the given molecule is shown as follows:

question_answer

Q: Calculate the Gibbs free energy (in kJ/mol) at 25 degrees C of the following reaction using the data...

A: The standard free energy of formation refers to the energy change which occurs when a compound is fo...

question_answer

Q: Rank the compounds in each group below according to their reactivity toward electrophilie aromatic s...

A: Among the given compounds, toluene contains activating group which encourages electrophilic aromatic...

question_answer

Q: How do you determine how many significant figures should be in your answer?

A: Rules for counting significant figures:Count the number of significant figures in the decimal portio...

question_answer

Q: What is the molecular orbital theory?

A: Molecular orbital (MO) theory in which any linear combination of atomic orbital gives the correspond...

question_answer

Q: The solubility of siliver bromide can be increased by dissolving it in a solution containing the thi...

A: The Equilibrium constant for the overall reaction = K1 × K2

question_answer

Q: Calculate the pH of 1M solution of acedic acid (pKa = 4.76)?

A: The pH of the acetic acid solution can be calculated using the formula shown in belowpKa = -log(10)[...