For 1,2-dibromoethane, the energy of "anti" conformation (1) is 1.0 kJ/mol lower than the energy of "gauche" conformations (2 and 3). Assuming that number of molecules in the eclipsed conformations (shown on top) is negligible, what % of 1,2-dibromoethane will be in "gauche" conformation at 300K.

Q: Energy differential:

A: Here we need to draw the chair conformations in the most stable form.  We care given with two methyl…

Q: H3C-CH₂ Ph H3C c=c I

A: Z and E are terms used to describe the stereochemistry of a double bond in organic chemistry. When…

Q: CH3. H3C, H3C" HH CH3 Ring-flip H3C H3C H- -CI A B (A) A=1.0 kJ/mol; B=11.4 kJ/mol; difference =…

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Q: For the the structure shown below, Part A) Draw the Newman projections and 3-D sawhorse structures…

A: In the given question we have to draw the Newman and sawhorse projection of the highest and lowest…

Q: Which of the following is a Newman projection for the following compound as viewed down the…

A: The molecule given is viewed along C3-C4 bond (number assigned arbitrarily).

Q: The cyclohexane derivative shown exists primarily in the more stable of the two available chair…

A: Cyclohexane ring has a stable chair conformation.  Each carbon atom of the cyclohexane has two types…

Q: H3C H H3C `Br H3C Br interaction energy, kJ/mol CH CH, eclipsed 11.0 H, Br eclipsed 7.0 H,H eclipsed…

A: The 1st confirmation changes to 2nd one via the fully eclipsed conformer (highest energy conformer)…

Q: Draw the two chair conformations of 1,1,3-trimethylcyclohexan ,and estimate the amount of strain…

A: The spatial arrangement of atoms in a molecule obtained by rotation around carbon - carbon single…

Q: (b) Consider the following substituted cyclohexane: NH, i. Draw the alternative chair conformations…

A: The given cyclohexane structure is:

Q: 2. Our knowledge of chair conformations allows us to use them to determine a great deal about a…

A: The objective of this question is to analyze the given reaction products and determine whether…

Q: Classify each conformation as staggered or eclipsed around the indicated bond, and rank the…

A: The Newman projection of the given compounds (around the indicated bond) are as follows:

Q: Estimate the straln energy of the following 2,3-dimethylbutane conformaton. Use straln energy…

A: The conformation for 2,3-dimethylbutane is given as

Q: 4. DRAW the line structure of 2-chloro-5-bromohexane. DRAW the 3 eclipsed Newman projections for…

A: Conformations:Alkanes contain carbon-carbon sigma (σ) bonds. Electron distribution of the sigma…

Q: build the most stable conformation of cis-1-isopropyl-2-methylcyclohexane.

A: Stereochemistry is branch of chemistry in which we deal with three dimensional arrangement of atoms…

Q: Which of the following newman projections is The following for n -pentane The lowest energy…

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Q: 2. For the two compounds below, draw the two possible conformations. Circle the conformation(s) that…

A: Conformations of cyclohexane:Rings larger than cyclopentane would have angle strain if they were…

Q: Write True (T) or False (F) after each statement. A. Cis-trans isomers are diastereomers: B. SN2…

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Q: -. Consider the following molecule: ÇH3 doly dolw viinab danne o no) 2 "otaupl oo " T i odio si blun…

A: In the given molecule the chlorine and isopropyl group are cis to each other and the methyl group is…

Q: Draw the Newmann projections of this molecule along the circled bond of this molecule, from the…

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Q: Cyclohexane derivatives exist primarily in the most stable of the available chair conformations.…

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Q: Please draw Newman Projections of the highest and lowest energy conformations associated with the…

A: In a Newman projection, three bonds of the first carbon are represented by the three lines in the…

Q: 3.(a) Draw Newman projections for the anti, gauche and fully eclipsed conformers of hexane as viewed…

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Q: ).(a) Draw Newman projections for the anti, gauche and eclipsed conformers 3(1 of 3,3-dichlorohexane…

A: Anti: Dihedral angle between two ethyl groups is 180 degrees Gauche: Dihedral angle between two…

Q: ank the following conformers in order of decreasing stability, putting the most stable first. H H…

A: Conformation is the carbon-carbon single bond rotation and in conformer, the anti conformer is the…

Q: 3. Given the molecule below, draw all the Newman Projections for the said molecule about C2-C3.…

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Q: Give the most stable conformation for the following

A: In the given compound, Cis-1-Chloro-2-tert-butylcyclohexane, the tert-butyl group is a heavy group…

Q: 1. The cyclohexane derivative shown below exists primarily in its most stable chair conformation.…

A: The most stable chair conformation of any substituted cyclohexane is the one in which bulkier…

Q: Which of the following is a Newman projection for the following compound as viewed down the…

A: The molecule given is viewed along C3-C4 bond (number assigned arbitrarily).

Q: :Regarding 1,3-butadiene When substituted by two phenyl groups the cis- conformation wavelengths…

A: Given molecule is: 1,3-butadiene. How the substitution on 1,3-butadiene effect its absorption in…

Q: equatorial

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Q: For the following two conformations of 2,3-dimethylbutane, determine (choose 1 option below) the…

A: The objective of this question is to determine the total energy cost associated with all torsional…

Q: 13. Newman Projections Draw the Newman projection for the most stable conformation and the least…

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Q: What is the energy difference between the staggered and eclipsed conformations of…

A: A staggered and the eclipsed conformations of alkane are conformational extremes for that molecule.…

Q: For the the structure shown below, Part A) Draw the Newman projections and 3-D sawhorse structures…

A: During Newman Projection drawing, look from C-2 to C-3. C-2 carbon contain two methyl (Me) groups…

Q: The anti-conformation is the most stable n-butane conformation. If you could take a snapshot of a…

A: Anti-conformation of n-butane is the most satble conformation. To determine, for 1 mole of n-butane…

Q: For which alkene(s), I, II or III, are cis/trans stereoisomers possible? CH3CH2CHC(CH3)2…

A: First draw the given structures and then see that the two groups on a carbon must not be same.

Q: Represent in perspective the most stable conformer of trans-4 isopropylcyclohexan-1-ol.

A: When Trans 1,4 disubstituent's come into scene. Its always axial-axial or equatorial-equatorial.  If…

Q: chair conformations. Give in the more stable chair conformation. If a group divides its time equally…

A: The big substitutent should be present at axial position to avoid the 1,3-diaxial interaction

Q: Draw (1R,3S)-1,3-dimethylcyclohexane, in its minimum energy conformation. Then draw the Newman…

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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.