Consider a Newman projection of butane shown. from the strain present in this conformation. H. H H H H H H H H H₂C H H CH₂ H H CH₂ H CH₂ -H H CH₂ CH3 CH3 gauche 0.9 kcal/mol steric strain H/H eclipsed bond 1.0 kcal/mol torsional strain CH₂/H eclipsed 1.4 kcal/mol torsional/steric strain CH3/CH3 eclipsed 2.6 kcal/mol torsional/steric strain H -CH₂ CH₂ te the energy

Consider a Newman projection of butane shown. from the strain present in this conformation. H. H H H H H H H H H₂C H H CH₂ H H CH₂ H CH₂ -H H CH₂ CH3 CH3 gauche 0.9 kcal/mol steric strain H/H eclipsed bond 1.0 kcal/mol torsional strain CH₂/H eclipsed 1.4 kcal/mol torsional/steric strain CH3/CH3 eclipsed 2.6 kcal/mol torsional/steric strain H -CH₂ CH₂ te the energy

Organic Chemistry: A Guided Inquiry

2nd Edition

ISBN:9780618974122

Author:Andrei Straumanis

Publisher:Andrei Straumanis

Chapter6: Alkanes & Alkenes

Section: Chapter Questions

Problem 4E: Consider the molecule 1-bromo-2-methylbutane. C3 and C4 should be drawn as Et as in theexample. This...

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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

Consider a Newman projection of butane shown. Calculate the energy
from the strain present in this conformation.
H.
H
H
H
H
H
H
H
H
CH3
H
H
H
H3C CH3
H
H
CH3
-H
H
-H
CH3
-H
H
CH3/CH3 gauche
0.9 kcal/mol steric strain
H/H eclipsed bond
1.0 kcal/mol torsional strain
CH3/H eclipsed
1.4 kcal/mol torsional/steric strain
CH3 CH3 eclipsed
2.6 kcal/mol torsional/steric strain
H
H
H
H
CH3
CH3
1
4
7
+/-
2
5
kcal/mol
3
6
8 9
0
X
C
x 100

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Fill in the blanks: cis-1,3-Dimethylcyclohexane has two different chair conformations: one withboth methyl groups in __________ positions and one with both methyl groups in ____________ positions.
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In kcal/mol
Can you help please?
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Compare the following conformers of 1-fluoropropan-1-ol. Match each conformer to their corresponding relative energy. Recall, the more stable the conformer the lower the energy. OH CH3 'F 2. HOH 2nd Highest Energy H 2nd Lowest Energy H3C 3. H. ОН Lowest Energy H 'F Highest Energy ČH3 4. H3C, OH 'F 1. >
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Consider a Newman projection of propane shown. Calculate the energy from the strain present in this conformation. H H H 4 5 6 H Interaction Type gauche CH3-H gauche CH3-CH3 eclipsed CH3-H eclipsed CH3-CH3 -Η CH3 Strain Energy (kcal/mol) 0.0 0.7 3.3 5.6
Thank you
Kk.256.