What is the most stable form of the following compounds? (i.e., draw the most stable form in chair form of both the compounds)

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2 Answers
May 20, 2018

Draw in crayon....?

Explanation:

Just to retire this question...you really should have a set of molecular models to address the problem... We know that bulky atoms or groups have unfavourable #"1,3-trans-diaxial"# interactions. And so which isomer has the LEAST trans-axial interaction? I don't know. And I still won't know until I make the models...so have at it....

May 20, 2018

Here's what I get.

Explanation:

Part (a)

(a)

I have oriented the chair forms below so that #"C1"# is on the right and #"C2"# and #"C3"# are in the front.

The two chair forms are

Chair 1

and

Chair 2

The more stable chair has more of the bulky groups in the equatorial positions.

Chair 1 has two equatorial chlorine atoms, and Chair 2 has four.

Chair 2 is the more stable form.

Part (b)

(b)

The chair forms are

Chair 3

and

Chair 4

Chair 3 has one equatorial chlorine atom, and Chair 4 has five.

Chair 4 is the more stable form.