(a) Construct a model of 1,2-diaminoethane and demonstrate to the lab instructor how you can view...
(a) Construct a model of 1,2-diaminoethane and demonstrate to
the lab instructor how you can view the model in a Newman type
projection so that you can look down the 1-2 bond and see the anti,
eclipsed, gauche and fully eclipsed rotamers.
(b) Draw and label a sketch of the conformational potential energy
curve for the important rotamers of the molecule in part (a) when
looking down the C-C bond. Draw and label the rotamers in Newman
projection as viewed with a carbon in front.
Homework Answers
Conformations in Newmann projection are formed by rotating the carbon that is behind.
Add Answer to:
(a) Construct a model of 1,2-diaminoethane and demonstrate to
the lab instructor how you can view...
draw the Newman projections. questions 1,2 and 3 1. (1 pts) 1 pts) Draw the Newman projection for the following spe...
draw the Newman projections. questions 1,2 and 3
1. (1 pts) 1 pts) Draw the Newman projection for the following species, looking down the between (i) ethyl and carboxylic acid group and (ii) OH and carboxylic acid group as the answer). in the bond indicated. Idell as anti, eclipsed or gauche соон OH (1) anti, eclipsed or gauche COOH WH HN (ii) anti, eclipsed or gauche 2. (1 pt.) Which conformation in question 1 is more stable (a) or (b)?...
1. Draw the Neman Projection of the following Promane descriptions Newman projection for most stable Newman...
1. Draw the Neman Projection of the following Promane descriptions Newman projection for most stable Newman projection for least stable conformation conformation 2. Draw the Newman projections for butane looking down the C2-C3 bond through a full 360 degree rotation. Start with the anti-staggered Newman projection then draw and label each Newman projection (staggered, eclipsed, gauche, anti-staggered, fully-eclipsed) for every 60 degrees of rotation Newman projection for most stable Newman projection for second-most stable conformation Conformation Newman projection for least...
3. Draw butane in wedge and dash depiction, sawhorse depiction and in its Newman projection looking...
3. Draw butane in wedge and dash depiction, sawhorse depiction and in its Newman projection looking down the 2.3 bond. Show eclipsed, gauche and anti forms. 4. Draw all Newman projections of 2-methylhexane showing eclipsed, gauche and anti forms. Rotate about the 3.4 carbon-carbon bond and watch what happens to the Draw a potential energy diagram for the rotation about the 3,4 carbon- carbon bond plotting Potential Energy versus Torsion Angle.
According to my teacher this is the correct answer. However would someone be able to explain to me how ii is eclipsed an...
According to my teacher this
is the correct answer. However would someone be able to explain to
me how ii is eclipsed and why it is not gauche.
1. (1 pts) Draw the Newman projection for the following species, looking down the bond indicated. Identify position between (i) ethyl and methoxy group and (ii) two methyl groups as anti, eclipsed or gauche (circle the answer). HIIT Br (i) anti, eclipsed or gauche (ii) anti, eclipsed or gauche bi
5. Construct a model of 1,2-difluoroethane. Draw the Newman projections for the staggered and eclipsed conformations...
5. Construct a model of 1,2-difluoroethane. Draw the Newman projections for the staggered and eclipsed conformations of 1,2-difluoroethane. Are these molecules isomers or conformers? If they are isomers to what specific category do they belong? 6. The structure of cyclohexane (C6H12) is based on a six membered ring of carbon atoms. Construct a model of cyclohexane. Cyclohexane can exist in two conformations; the boat or chair conformation (shown below). What are the C-C-C, C-C-H, and H-C-H bond angles at each...
ох 1. Provide the name of the following compounds. så stk 2. Provide the name of...
ох 1. Provide the name of the following compounds. så stk 2. Provide the name of the following compounds. 3. Provide the line structure given the following names. A. 2,6,6,8-tetramethyl-5-neopentyldecane R. 7-methylbicycln[4.2.2]decane ох 4. A. Draw the Newman Projection of pentane looking down the C2-C3 bond in a stageered confirmation B. Draw an energy diagram showing the conformational analysis using the Newman Projection above (showing a 360 degree total rotation, 60 degrees at a time). Hint - see Figure 46,...
18. How many rings does the following molecule have? AL B.2 0.3 0.4 E. None of...
18. How many rings does the following molecule have? AL B.2 0.3 0.4 E. None of the above 19. Which of the following would represent the lowest energy conformation of butane looking at the Newman projection down the C2-C3 bond? A. The (CH3,CH3) eclipsed conformation C. The gauche conformation B. The (H,CH) eclipsed conformation D. The anti-conformation E. The parallel conformation
9.78 The two lowest energy conformations of pentane are the anti-anti and the anti-gauche forms, in...
9.78 The two lowest energy conformations of pentane are the anti-anti and the anti-gauche forms, in terms of arrangements around the two central C─C bonds. A recent study analyzed the conformations of 3-heptyne as an “elongated” analogue of pentane, where a carbon-carbon triple bond is “inserted” between C2 and C3 of pentane.[15] Interestingly, the researchers found that in each of the two most stable conformations of 3-heptyne, C1 and C6 are nearly eclipsed (looking down the alkyne group). In one...
In-Class Worksheet In the box below each molecule, draw Newman projections for the structures A, B,...
In-Class Worksheet In the box below each molecule, draw Newman projections for the structures A, B, and C shown from the perspective indicated. For each Newman projection that you've drawn, indicate if there are any eclipsed bonds or 1. gauche butane interactions. H H CH3 H3C CH3 CH3 H. H3C CH3 H CH3 H H Structure C Structure B Structure A Structure A can exist in a lower energy conformation by undergoing a bond rotation; draw the Newman projection of...
I already know how to do 1 and 2. if you could show me how to...
I already know how to do 1 and 2. if you could show me how to do
number 3 on the graph above, and how to calculate the expected
energy of the conformer please
1 60 120 180 240 300 360 Torsion angle (degrees) AE (kcal/mol) In the box below each molecule, draw Newman projections for the structures A, B, and C shown from the perspective indicated. For each Newman projection that you've drawn, indicate if there are any eclipsed...
draw the Newman projections. questions 1,2 and 3
1. (1 pts) 1 pts) Draw the Newman projection for the following species, looking down the between (i) ethyl and carboxylic acid group and (ii) OH and carboxylic acid group as the answer). in the bond indicated. Idell as anti, eclipsed or gauche соон OH (1) anti, eclipsed or gauche COOH WH HN (ii) anti, eclipsed or gauche 2. (1 pt.) Which conformation in question 1 is more stable (a) or (b)?...
1. Draw the Neman Projection of the following Promane descriptions Newman projection for most stable Newman projection for least stable conformation conformation 2. Draw the Newman projections for butane looking down the C2-C3 bond through a full 360 degree rotation. Start with the anti-staggered Newman projection then draw and label each Newman projection (staggered, eclipsed, gauche, anti-staggered, fully-eclipsed) for every 60 degrees of rotation Newman projection for most stable Newman projection for second-most stable conformation Conformation Newman projection for least...
3. Draw butane in wedge and dash depiction, sawhorse depiction and in its Newman projection looking down the 2.3 bond. Show eclipsed, gauche and anti forms. 4. Draw all Newman projections of 2-methylhexane showing eclipsed, gauche and anti forms. Rotate about the 3.4 carbon-carbon bond and watch what happens to the Draw a potential energy diagram for the rotation about the 3,4 carbon- carbon bond plotting Potential Energy versus Torsion Angle.
According to my teacher this
is the correct answer. However would someone be able to explain to
me how ii is eclipsed and why it is not gauche.
1. (1 pts) Draw the Newman projection for the following species, looking down the bond indicated. Identify position between (i) ethyl and methoxy group and (ii) two methyl groups as anti, eclipsed or gauche (circle the answer). HIIT Br (i) anti, eclipsed or gauche (ii) anti, eclipsed or gauche bi
5. Construct a model of 1,2-difluoroethane. Draw the Newman projections for the staggered and eclipsed conformations of 1,2-difluoroethane. Are these molecules isomers or conformers? If they are isomers to what specific category do they belong? 6. The structure of cyclohexane (C6H12) is based on a six membered ring of carbon atoms. Construct a model of cyclohexane. Cyclohexane can exist in two conformations; the boat or chair conformation (shown below). What are the C-C-C, C-C-H, and H-C-H bond angles at each...
ох 1. Provide the name of the following compounds. så stk 2. Provide the name of the following compounds. 3. Provide the line structure given the following names. A. 2,6,6,8-tetramethyl-5-neopentyldecane R. 7-methylbicycln[4.2.2]decane ох 4. A. Draw the Newman Projection of pentane looking down the C2-C3 bond in a stageered confirmation B. Draw an energy diagram showing the conformational analysis using the Newman Projection above (showing a 360 degree total rotation, 60 degrees at a time). Hint - see Figure 46,...
18. How many rings does the following molecule have? AL B.2 0.3 0.4 E. None of the above 19. Which of the following would represent the lowest energy conformation of butane looking at the Newman projection down the C2-C3 bond? A. The (CH3,CH3) eclipsed conformation C. The gauche conformation B. The (H,CH) eclipsed conformation D. The anti-conformation E. The parallel conformation
In-Class Worksheet In the box below each molecule, draw Newman projections for the structures A, B, and C shown from the perspective indicated. For each Newman projection that you've drawn, indicate if there are any eclipsed bonds or 1. gauche butane interactions. H H CH3 H3C CH3 CH3 H. H3C CH3 H CH3 H H Structure C Structure B Structure A Structure A can exist in a lower energy conformation by undergoing a bond rotation; draw the Newman projection of...
I already know how to do 1 and 2. if you could show me how to do
number 3 on the graph above, and how to calculate the expected
energy of the conformer please
1 60 120 180 240 300 360 Torsion angle (degrees) AE (kcal/mol) In the box below each molecule, draw Newman projections for the structures A, B, and C shown from the perspective indicated. For each Newman projection that you've drawn, indicate if there are any eclipsed...
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