What is difference between chain conformation and configuration, compare and contrast. What is importance of chain conformation in real world, give 2 examples.

4- Use Newman projections to represent the most stable conformer for the following molecules (remember to assign Gauche interactions). Br HN

5. For the pair of compounds circle the compound which is more stable (you may find it helpful to draw out the chair conformation)

Please don't provide handwritten solution .....

In the molecule 2 methyl hexane, how many of the C-C bonds have staggered conformers that are equally stable? The answer is 3 but I don't understand how they got there.

The barrier to C-C bond rotation in ethanol (CH3-CH2-OH) is 14 kJ/mol. What energy can you assign to an H-O eclipsing interaction? Use strain energy increments from the table below in your calculation. (Specify units, kJ/mol; Calculate to nearest 0.1 energy units) Energy cost Interaction HH eclipsed H→ CH3 eclipsed Cause (kJ/mol) (kcal/mol) Torsional strain 4.0 1.0 Mostly torsional strain 6.0 1.4 CH3 -> CH3 eclipsed Torsional and steric strain 11.0 2.6 - CH3 CH3 gauche Steric strain 3.8 0.9

For the following structural formula, pick the structure that accurately represents its MOST STABLE conformation. CH3 H₂Cl... Br Br Br H₂C O D. O B. O C. O A. CH3 A CH3 B CH3 ... Br 주 Br H3C C CH3 H3C CH3 D

Build the molecular models of cis-1,2-dichlorocyclopentane and trans-1,2-dichlorocyclopentane. Then draw the three-dimensional structures

For the molecule shown below, provide a name and draw both chair conformers and label the most stable conformation. H3C,,. CH3

Give detailed Solution with explanation