
4. Draw (2S)-iodopentane and the Newman projection along the bond from C3 to C2. 5. Define...
Sighting along C2-C1 bond of 2-methylpropane and C2-C3 of 2-methylbutane a. Draw a Newman projection of the most stable conformation of each compound b. Draw a Newman projection of the least stable confirmation of each compound
From the perspective of viewing down the C2-C3 bond, draw the Newman projection of the least stable conformation of 2,3-dimethylbutane.
2. Consider the C2-C3 bond in n-pentane: a. Draw a Newman projection for the molecule. b. Show its most unstable conformation. c. Show its most stable conformation. d. Show one gauche conformation.
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table Newman projection for 3-ethyl-2-methylpentane along C2-C3 axis Draw Newman projection here: ek
H3C 4. Draw the lowest energy Newman Projection for the C3-Ca bond of 2,7- dimethyloctane 5. Draw the highest energy Newman Projection for the C3-C4 bond of 2,7- dimethyloctane 6. Convert each of the following 2-dimensional drawings into chair conformations. The positions have been pre-assigned, to make your answers easier to check. 2 2
Use a Newman Projection about the indicated bond to draw a 3-methylpentane at the C2-C3 bond. What would be its relative potential energy from 0 degrees fully rotated 360 degrees. Describe what is happening at each point and use anti, gauche, eclipsed, totally eclipsed, and staggered to better explain in detail.
16. Draw the Newman projection (viewing down the C3-C4 bond) for the two staggered conformations of hexane that have different energies. Indicate the conformation with the lowest energy. (5 pts) 17. Consider the molecule below. (10 pts) CZ Bry Br CI a) Is this molecule chiral? Provide an explanation. b) Draw both chair configurations for this molecule, and circle the more stable conformation (if applicable).
Conformations of Alkanes and Cycloalkanes 1) Draw a Newman projection of the anni conformation of 1.2-dichloroethane che conformation of 1.2-dichloroethane 2) Draw a Newman projection of the 5) Sight along the C2-C3 bond of 2-methylbutane and draw each of the staggered conformations 4) Arrange the following conformations from lowest to highest energy. CH CH 5) Circle the Most stable conformation of the molecule shown below. н сн, YI 6) Circle the Most stable conformation of the molecule shown below.
make a model of butane in its lowest energy conformation and draw: newman projection looking along the C2/C3 bond newman projection looking alonf the C1/C2 bond
2. (10 points) For the following molecule: Cl Cl (a) Provide the IUPAC name for the above molecule. On the above structure, assign the configuration of each chiral center using CIP notation. (b) Draw the Newman projection looking down the C2-C3 bond. What is the dihedral angle between the two chlorine atoms? (c) Draw the Newman projection looking down the C2-C3 bond of the conformer that is most unstable. Indicate whether there is a molecular dipole moment for this conformer...