Which conformation of methylcyclohexane is more stable?

Which conformation of methylcyclohexane is more stable?

chair conformation
The most stable conformation of methylcyclohexane is the chair conformation in which the methyl group is equatorial. The alternative chair conformation, in which the methyl group is axial, is 7.3 kJ/mol higher in energy.

Which cis conformation is stable?

Because large groups prefer to be equatorial, the most stable conformer for cis-1,3-dimethylcyclohexane is the diequatorial conformer, shown here. The diaxial conformer would be higher in energy.

Which of the conformations is the most stable?

staggered conformation
hydrocarbons. …with respect to the other—the eclipsed conformation is the least stable, and the staggered conformation is the most stable. The eclipsed conformation is said to suffer torsional strain because of repulsive forces between electron pairs in the C―H bonds of adjacent carbons.

How do you know which conformation is more stable?

To Determine Chair Conformation Stability, Add Up The A-Values For Each Axial Substituent. The Lower The Number, The More Stable It is.

Which of the following is the most stable conformation of cis 1 ethyl 2 methylcyclohexane?

The more stable of the two will be trans-1-ethyl-2-methylcyclohexane, and here’s why that would be. Notice that you have the ethyl group attached to carbon (1) in UP position on an equatorial bond. The methyl group is attached to carbon (2) in DOWN position on an equatorial bond as well.

Why is methylcyclohexane more stable than axial methylcyclohexane?

Because this process is rapid at room temperature, methylcyclohexane is a mixture of two conformational diastere- omers (Sec. 6.10A). Because diastereomers have different energies, one form is more stable than the other. Equatorial methylcyclohexane is more stable than axial methylcyclohexane.

Which conformations of 2 Methylbutane are the most stable?

Comparing 1, 3 and 5, we see that 1 has two “bad” gauche interactions, whereas 3 and 5 have only one gauche interaction; thus 3 and 5 are both equally stable, and they are the most stable conformations for 2-methylbutane.

Which of the following conformation has highest stability Mcq?

The most stable conformer has dihedral angle of 60° between all adjacent chlorine atoms.

In the least stable conformer, two Cl-atoms are eclipsing one another while other two Cl-atoms are eclipsed to hydrogen atoms.

In the most stable conformer, dihedral angle between hydrogen atoms is 60°

Is CIS or cyclohexane more stable?

In cis-1,2-dimethylcyclohexane, one methyl group is axial and one methyl group is equatorial in both ring flip conformers, so neither conformer is more stable than the other. The trans-1,2-dimethylcyclohexane has the most stable conformer, so it is the more stable isomer.

Which of the following describes the most stable conformation of cis 1 ethyl 4 methylcyclohexane?

The structure above, having both substituents pointing up, is indeed cis-1-ethyl-4-methylcyclohexane. With one substituent being axial and one equatorial, this is the more stable chair conformation, having the larger ethyl group in the equatorial position.

Which of the following is most stable intermediate?

Correct answer: The carbocation bonded to three alkanes (tertiary carbocation) is the most stable, and thus the correct answer. Secondary carbocations will require more energy than tertiary, and primary carbocations will require the most energy.

How many conformations does methylcyclohexane have?

Methylcyclohexane. Methylcyclohexane is cyclohexane in which one hydrogen atom is replaced with a methyl group substituent. Methylcyclohexane can adopt two basic chair conformations: one in which the methyl group is axial, and one in which it is equatorial.

Which is more stable cis-1-chloro-3-methylcyclohexane?

One of the two chair structures of cis-1-chloro-3- methylcyclohexane is more stable than the other by 3.7 kcal/mol. Which is it? | Socratic One of the two chair structures of cis-1-chloro-3- methylcyclohexane is more stable than the other by 3.7 kcal/mol.

Which is more stable Chloro or methyl chair?

If you compare the two chair conformations shown above, one has the chloro and methyl groups in axial positions, while the other one has them in equatorial positions. This means that the second chair, in this example the flipped chair, will be more stable than the first.

Where are the chloro and methyl groups located?

Since the compound is cis, the chloro and the methyl groups must either be on a wedge, or on a dash. The above image shows both of them on wedges. The first chair conformation for the compound looks like this The chloro group is UP in axial position, the same as the methyl group, which is UP in axial position as well.

Which is Thieme chemistry contribution is provided by PubChem?

The Thieme Chemistry contribution within PubChem is provided under a CC-BY-NC-ND 4.0 license, unless otherwise stated.