Question

Figure 2: How many chiral carbons does this model have? a Does this model have a plane of symmetry? Rotate the central bond to see b. possible conformations before answering/ Yes No Make the mirror image model of this molecule. Are the mirror images identical? Yes No C. dl What is the term for the relationship between these structures? Are these structures chiral €or achiral? Switch two of the groups on one of the carbons of one model, resulting in the structure shown in Figure 3 below. ..... Figure 3 Fiqure 2 Are the structures now identical? Yes f No g. Are they stereoisomers? Yes€ h. What is the relationship between these structures? If you rotate the center bond of the molecule with switched groups (Fig. 3), can you find a conformation with a plane of symmetry? Yes No No € i. jWill the mirror image of Figure 3 be superimposable with Figure 3? Yes k. Is Figure 3 chiral? Yes No No € Is Figure 3 optically active? Yes No

Answer 1

2 ll 2 3 1 3 2 2 211レ 3 2. C 3 tly ing rdge 1 1 Fikcher 3 2 3 1 Fischer 2 chiral carzbon a. do er this model have No, this model do es not have p lane oAYmmetry ceuce 1 C. 1 3 2 2 3 2 3 2 1 1 mirror yes they arte identi cae They arce enantiomers chirals They e. wN

2 3 2 Fig 2" 1 2 2 /t 3 3 1 2 plane 3 1 f. No they not idenh'cae ave ayes they arre stereo tsomers The relationship 5/w them Diastereomer plane of aym metry wi yes ll be Pound j. they yes superimpo sable arce K. Yes 3 is chirwe N., Pit - gprienlly 3 plane f ymmety Poss ess inactive meso-comp n 3 3 2