5. Concepts Label the follow pairs of molecules as constitutional isomers, conformers, or stereoisomers CH3 CH3 H3C. CH3 CH3 CH3 но H3C. H3C CH3 and and and H *CH3 H. CH3 CH3 CH3 CH3 CI .CH3 HO CH3 What is the length of a C-C single bond

1 F1 Q @ 2 F2 W Draw the two chair cyclohexane conformations for the compound shown below. How many substituents are axial in the less stable conformation? >> F10 #3 3 C/ "CI 00 01 02 03 A Moving to another question will save this response. 80 F3 F4 ㅎ... E S4 $ R % 5 F5 T MacBook Air F6 6 Y & 7 F7 U * 00 8 DII F8 ( 9 F9 ) 0 1 I P

Consider the compound C₂H₃N. Which one of the structures in Figure 4 is the best representation of this compound based on your current knowledge? *   A   B   C   D   All these structures are good representations of the compound.

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

Cyclohexane structures can have two chair conformations. Draw the alternate conformation of the structure shown below. Rotations of the structure are not allowed. H3C CF3

Classify the pairs of molecules as not the same molecule, structural isomers, diastereomers, enantiomers or identical. Circle any molecules that are not achiral (a) (b) (c) Br... H CI H H Br H H3C Br H. CI Br H Br CI I I Br" "H H Br H CH3 Cr Br

What is the relationship for the following pairs of compounds.  The options include constitutional isomers, not isomers, enantiomers, conformers, identical, resonance structures.

Projection drawings of all isomers of C6H4Cl2. Can you convert one into another without breaking any bonds? What type of isomerism do these represent?

Draw two constitutional isomers that share the molecular formula C2H,N. Your structures will have the same molecular formula but will have different connectivities.

Chemistry Alkanes: Order the stereoisomers in order of energy in their lowest energy conformations Part A The following three compounds can be made by a reaction developed in the Grossman group. Rank them from lowest to highest energy in their lowest energy o Rank from lowest to highest. To rank items as equivalent, overlap them. Reset Help CO₂Me CO₂Me CO₂Me ICNO CNO ww Submit CN CO Me CH₂ lowest energy The correct ranking cannot be determined. My Answers Give Up CN CO Me CH₂ CN O CN CO Me CH₂ highest energy