Organic Chemistry
12th Edition
ISBN: 9781118875766
Author: T. W. Graham Solomons, Craig B. Fryhle, Scott A. Snyder
Publisher: WILEY
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Textbook Question
Chapter 5, Problem 51P
(Use models co solve this problem.) Write conformational structures for all of the stereoisomers of 1,3-diethylcyclohexane. Label pairs of enantiomers and meso compounds if they exist.
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Using your model, construct an energy diagram to show the variation in the free energy of the molecule as the FRONT ATOM is rotated CLOCKWISE from 0º to 360º in 60º increments. In your energy diagram, you should clearly show the relative energies of each conformer.
For the 1,2-dichlorocyclohexane stereoisomers, which conformation of the trans stereoisomer has the lower energy, the diaxial or the diequatorial conformer? Which isomer and conformation of the three you built has the lowest energy? E of all the isomers of 1,2-dichlorocyclohexane. Explain the differences in energy, i.e., identify the sources of strain in the conformations you built. Show the sources of strain in a drawing.
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Chapter 5 Solutions
Organic Chemistry
Ch. 5 - Prob. 1PPCh. 5 - Prob. 2PPCh. 5 - Prob. 3PPCh. 5 - Prob. 4PPCh. 5 - Prob. 5PPCh. 5 - Prob. 6PPCh. 5 - Prob. 7PPCh. 5 - Practice Problem 5.8 Write three-dimensional...Ch. 5 - Prob. 9PPCh. 5 - Prob. 10PP
Ch. 5 - Practice Problem 5.11 List the substituents in...Ch. 5 - Prob. 12PPCh. 5 - Practice Problem 5.13 Tell whether the two...Ch. 5 - Prob. 14PPCh. 5 - Prob. 15PPCh. 5 - Prob. 16PPCh. 5 - Prob. 17PPCh. 5 - Prob. 18PPCh. 5 - Prob. 19PPCh. 5 - Prob. 20PPCh. 5 - Practice Problem 5.21 The following are formulas...Ch. 5 - Practice Problem 5.22 Write three-dimensional...Ch. 5 - Prob. 23PPCh. 5 - Practice Problem 5.24 Give names chat include (R)...Ch. 5 - Prob. 25PPCh. 5 - Prob. 26PPCh. 5 - Prob. 27PPCh. 5 - Prob. 28PPCh. 5 - Practice Problem 5.29 Write formulas for all of...Ch. 5 - Prob. 30PPCh. 5 - Prob. 31PPCh. 5 - Prob. 32PPCh. 5 - Prob. 33PCh. 5 - Prob. 34PCh. 5 - 5.35 Designate the (R) or (S) configuration at...Ch. 5 - Prob. 36PCh. 5 - (a) Write the structure of...Ch. 5 - Shown below are Newman projection formulas for...Ch. 5 - 5.39 Write appropriate structural formulas...Ch. 5 - Discuss whether each of the following compounds...Ch. 5 - Prob. 42PCh. 5 - Prob. 43PCh. 5 - Compound F has the molecular formula C5H8 and is...Ch. 5 - Prob. 45PCh. 5 - Prob. 46PCh. 5 - Prob. 47PCh. 5 - For the following molecule, draw its enantiomer as...Ch. 5 - 5.49 (Use models to solve this...Ch. 5 - 5.50 (Use models to solve this...Ch. 5 - (Use models co solve this problem.) Write...Ch. 5 - 5.52 Tartaric acid was an important compound in...Ch. 5 - Prob. 53PCh. 5 - Prob. 54PCh. 5 - Prob. 55PCh. 5 - Prob. 1LGPCh. 5 - Prob. 2LGPCh. 5 - Prob. 3LGP
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- Using what you know about the conformational energetics of substituted cyclohexanes, predict which of the two decalin isomers is more stable. Explain your reasoning.arrow_forwardBetween the cis and trans configuration of 1-chloro-4-methylcyclohexane, which is the most stable stereoisomer and configuration? To prove your argument, draw a model or use a modeling software to model cis- and trans-1-chloro-4-methylcyclohexane (show all the hydrogens and ensure proper chair conformation) and use arrows to show where steric strain occurs.arrow_forwardWhat is the most stable conformation for trans-1,2-dichlorocyclohexane. Describe and explain brieflyarrow_forward
- For 1,2-dichloroethane: ( Q.) Which eclipsed conformation(s) has (have) the lowest energy? Which has (have) the highest energy?arrow_forwardImagine that this worksheet has sucked you the plane of the page, and you are now facing the indicated bond of the drawn molecule. a. Draw the six main Newman projections for the indicated bond: three eclipsed, three staggered. b. Label which conformers are eclipsed ands taggered.c. Identify the most and least stable conformer, and explain your reasoning.arrow_forwardStereoisomers share the same connectivity and differ only in the way their atoms are arranged in space. Draw the structure of a compound that is a stereoisomer of cis-1,2-dimethylcyclobutane.(Note that the question asks for a different stereoisomer of the named compound and not the named compound itself.)Use the wedge/hash bond tools to indicate stereochemistry where it exists.In cases where there is more than one answer, just draw one.arrow_forward
- Rank these conformational isomers in order of decreasing potential energy. Rank from hightest to lowest potential energy. To rank items as equivalent, overlap them. Be sure to rank all of the structures!!!!arrow_forwardWhat is the maximum number of stereoisomers that can exist for this molecule? Can you help me, please? can you explain to me please?arrow_forwardDraw the Newmann projections of this molecule along the circled bond of this molecule, from the point of view of the eye. You should include and label the syn-periplanar, gauche, anticlinal and anti-periplanar conformations, and whether the conformation is staggered or eclipsed. List these four conformations from most stable to least stable?arrow_forward
- Perform a conformational analysis of 1-bromo-2-chloroethane, BrCH2CH2Cl. Pay attention to the relative energies of the various conformations, but do not concern yourself with the actual energy values.arrow_forwardIn the space provided below, write a line structure corresponding to the systematic name (R)-3-methylhexane. Then, provide a Newman projection that illustrates the lowest energy conformation of (R)-3-methylhexane along the C3-C4 bond axis of the same. Again, place your answer in the space provided.arrow_forwardBetween the cis and trans configuration of 1-chloro-3-methylcyclohexane, which is the most stable stereoisomer and configuration? To prove your argument, use your models or a modelling software to model cis- and trans-1-chloro-3-methylcyclohexane (show all the hydrogens and ensure proper chair conformation) and use arrows to show where steric strain occurs. Include these photos in your answer.arrow_forward
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