the one that corresponds to the most stable eclipsed conformation of molecule A: the one that corresponds to the least stable conformation of molecule A: the one that corresponds to molecule A as seen by the eye of the observer in the statement: Choose... the one that corresponds to the least stable staggered conformation of molecule A: the one that corresponds to the most stable conformation of molecule A: Choose... ◆ Choose... ◆ Choose... Choose... ◆

the one that corresponds to the most stable eclipsed conformation of molecule A: the one that corresponds to the least stable conformation of molecule A: the one that corresponds to molecule A as seen by the eye of the observer in the statement: Choose... the one that corresponds to the least stable staggered conformation of molecule A: the one that corresponds to the most stable conformation of molecule A: Choose... ◆ Choose... ◆ Choose... Choose... ◆

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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The diaxial conformation of cis-1, 3-dimethylcyclohexane is approximately 23 kJ/mol (5.4 kcal/mol) less stable than the diequatorial conformation. Draw the two possible chair conformations, and suggest a reason for the large energy difference.
I H. H H. H Identify the Newman projection that depicts the eclipsed conformation of butane. CH3 I H CH3 H CH3 H CH3 || IV `H I H H H CH3 H H V H3C CH3 J HH H CH3 H -H CH3 FH CH3 A) I B) II C) III D) IV E) V
Consider the derivative of cyclohexane A and its representation in chair conformation B: 7 3 H3C $1 Ń 4 9 1 2 Complete Structure B: 3 4 5 6 7 8 9 HO 10 AT Choose... H OH electron lone pair CH3 CH2OH Choose... Choose... Choose... Choose... F Choose... OH ◆ + ♦ ◆ H 10 B 6 5
.....Draw the Newman pr0jecti0ns 0f the three p0ssible staggered c0nf0rmati0ns 0f2,3-dimethylbutane, viewed thr0ugh the C2—C3 b0nd. What are the relativeenergies of each c0nf0rmati0n?
Which of the following is a Newman projection for the following compound as viewed down the indicated bond in the conformation shown? Save Et H. I CH3 Et CH3 CH3 CH3 Et H H. I Et CH3 -I || Et Da CH3 H CH3 Et I H₂ ||| CH3 H. I -I H CH3 H CH3 IV
6. Newman projections to Lewis structures From the following Newman projections, draw the corresponding Lewis structure in the same conformation. A) B) H. H CH3 H₂C N H OH CI Br CH3 H OH CH3
Consider rotation about the indicated bond in the molecule below. Which Newman Projection formula best represents the most stable conformer of the molecule with respect to rotation about the indicated bond? [As noted below: there is no steric strain between -H and -Et that have a gauche, staggered relationship] H CH3 Br-C-C-CH₂CH3 H. H Br CH₂CH₂ 1 CH3 H CH3CH₂ H Br H₂C || H H₂C H Br H ||| Select one: OA. I O B. II O C. III O D. All conformers have identical energies. CH₂CH3 H NOTE CH3CH₂ H no steric strain
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to Medical Chemistry II. (BMC1CHEM02) oard / My courses / Introduction to Medical Chemistry II. (BMCICHEM02) / 29/03 2021 Chemistry Electronic te Electronic test in Chemistry n3 Cyclobutane is more stable molecule than cyclopropane, because.... Select one: ut of it has less angle strain. cyclobutane has a cis-trans stereoisomers. cyclobutane is a larger ring. it has more torsional strain. cyclopropane is planar. Next page
Which of the following conformation is the least stable conformation Newman projection)? CH3 CH3 CH3 CH3 CH CH3 CH3 H H. H H. H. CH3 CH3 II II I
How do we distinguish between constitutional, configurational, conformational, and enantiomers?
Consider the structural/conformational isomers of isopropyldimethylcyclohexane shown below. Match each isomer to the statement that best describes its properties. VHas the least steric repulsion / steric strain. EVHas the most torsional and steric strain overall Me iPr, VHas a syn-pentane interaction between two (or more) non-hydrogen substituents Me VIs the lowest energy boat conformation shown В. H. Ме iPr Me C. Me iPr `Me H D. iPr Me Me E. Me Me H- iPr