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Chair conformations must be considered before determining overall chirality of a molecule.
a. FALSE
b. TRUE
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- 1. Tell whether the following pairs of structures are identical or not. 2. For those pairs that are not identical, explain what types of isomers they are. 3. If there are chiral centers, denote them with the correct R,S.Which one of the molecules below has a chiral (optical) isomer? a. C. b. H-C a H3C-C-CH3 H₂C-CH3 с -CH3 d OH d.. H3C- F NH₂ -OH CI H3C-CH₂-COH H₂C-CH3which chair conformation is more stable and why?
- .. O 2. Give the molecula formula for the following compounds and star the chiral center(s) in each one of them if there is any. HO NO2 HS N' HOOJ HN Но H. CH3 followingnotegu F. HOO) HO, CH3 HOO). N. ఆరింది 3. Define chiral and an achiral molecules. 4. Define structural (or constitutional isomers). Draw as many constitutional isomers as possible with a molecular formula of C6H14 5. Define stereoisomers and give an example of two stereoisomers (draw them in line-angle notation). 6. Define diastereomers and give an example of two diastereomers (draw them in line-angle notation). 7. Define enantiomers and give an example of two enantiomers (draw them in line-angle notation).Consider the Newman projections, A-C. CHO Н. H CHO OH A CH₂OH OH но. н H ОН CH₂OH B н. НО CHO OH C .CH₂OH н i. Determine the structural relationship of A and B; B and C. ii. Without a change in conformation, assign the configuration to the chiral centers in B.Set #11 R,S Notation and Nomenclature 1. Name each of the following molecules following IUPAC system of nomenclature. Include E and Z where applicable. Also, include R and S for each chiral center if it can be determined. a. b. Br Br Br Br d. a. b. С. d.