Energy costInteractionHH eclipsedH CH3 eclipsedCauseTorsional strain(kJ/mol)(kcal/mol)4.01.0Mostly torsional strain6.01.4CH3→ CH3 eclipsedTorsional and steric strain11.02.6CH3 CH3 gaucheSteric strain3.80.9Draw all the newman projections of 2-methylbutane rotated about the C2-C3bond. What is the difference in energy between the most stable and leaststable conformers in kj/mol?

ExplanationNewman Projections of 2-MethylbutaneFirst, identify the groups attached to the C2 and C3…

Answered: Energy cost Interaction HH eclipsed H…

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Rank these in order of increasing energy (1 = lowest, 3 = highest). Explain in terms of strain (which you should indicate on each molecule) CH3 CH3 H. H- H. H. H H3C
A sulfonium ion (R3S+) is a stereogenic center if three different alkyl groups are bonded to sulfur because sulfur is surrounded by four different groups, including its lone pair. In assigning an R or S) is a stereogenic center if three different alkyl groups are bonded to sulfur because sulfur is surrounded by four different groups, including its lone pair. In assigning an designation to sulfur, the lone pair is always assigned the lowest priority (4). SAM, S -adenosylmethionine, is a biologically active sulfonium ion that we will learn about in Section 7.16. Locate all the stereogenic centers in SAM, and assign an R,S designation to each center.
9 True or false
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Create a conformational analysis using the molecule in the picture. Follow the instruction in the picture when you transform the molecule into its Newman projection. Explain the conformations.
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Consider the energy diagram showing the conformational analysis of propane and match the indicated position with the correct conformation below. 00000 - = 3 2 OIV OV Н. CH3 Н Н H пи m 0 dihedral angle energy 180 HH H Н II Н. H Н Ш CH3 H 180 HCH3 HXH Н IV HCH3 CH3 HXH Н V
Which is the most stable carbocation in the given set? A Select the best reason from the following set: 1. Alkyl groups increase steric strain around the carbocation in the eclipsed conformation. 2. Alkyl groups decrease torsional strain around the carbocation in the eclipsed conformation. 3. Alkyl groups donate electron density to decrease the effective (+) charge on the carbocation carbon atom. 4. Alkyl groups withdraw electron density to increase the effective (+) charge on the carbocation carbon atom. Give your answer in a two character format e.g. E5 where E represents your most stable carbocation and 5 represents the reason number. Fill in the blank
Calculate strain energy for the conformer pictured below, using strain energy increments from the table.
Draw the Newman projections of the most stable and least stable conformations of 1,1-dichloro-3,3,4,4-tetramethylpentane, viewed down the bond from C, to C3- Part 1 of 2 Draw the most stable conformation. Select a template to begin. X

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