Calculate strain energy for the conformer pictured below, using strain energy increments from the table. CH,CH3CH3H3C Strain Energy for AlkanesInteraction / Compound kJ/mol kcal/molH:H eclipsingH: CH, eclipsing4.01.05.81.4CH3 : CH3 eclipsing11.02.6gauche butane3.80.9cyclopropane11527.5cyclobutane11026.3cyclopentane26.06.2cycloheptane26.26.3cyclooctane40.59.7

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Calculate strain energy for the conformer pictured below, using strain energy increments from the table.

Organic Chemistry

9th Edition

ISBN:9781305080485

Author:John E. McMurry

Publisher:John E. McMurry

Chapter4: Organic Compounds: Cycloalkanes And Their Stereochemistry

Section4.3: Stability Of Cycloalkanes: Ring Strain

Problem 8P: Each Hâ†”H eclipsing interaction in ethane costs about 4.0 kJ/mol. How many such interactions are...

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Concept explainers

Alkanes and Cycloalkanes

Alkanes are saturated organic compounds which are made up of C and H atoms. Alkanes have the general formula of CnH2n+2. Alkane contains sp3 hybridized carbon atoms with four sigmas (σ) bonds & every hydrogen atom is connected with one of the carbon atoms. The size of the alkane could be determined by the number of carbon atoms located in it.

Question

Calculate strain energy for the conformer pictured below, using strain energy increments from the table.

Strain Energy for Alkanes
Interaction / Compound kJ/mol kcal/mol
H:H eclipsing
H: CH, eclipsing
4.0
1.0
5.8
1.4
CH3 : CH3 eclipsing
11.0
2.6
gauche butane
3.8
0.9
cyclopropane
115
27.5
cyclobutane
110
26.3
cyclopentane
26.0
6.2
cycloheptane
26.2
6.3
cyclooctane
40.5
9.7

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