Interpretation:
The given sample is to be categorized as a racemate, pure enantiomer, or pure stereoisomer.
Concept introduction:
The molecules that are nonsuperimposable or not identical with their mirror images are known as chiral molecules.
A pair of two mirror images that are non-identical is known as enantiomers which are optically active.
The objects or molecules that are superimposable with their mirror images are achiral objects or molecules and these objects have a centre of symmetry or plane of symmetry.
The achiral compounds in which plane of symmetry is present internally and consists of chiral centres are known as meso compounds but they are optically inactive.
The stereo formula that is depicted in two dimensions, in which stereochemical information is not destroyed, is determined by Fisher Projection formula.
The stereoisomers that are nonsuperimposable on each other and not mirror images of each other are known as diastereomers.
Chiral molecules are capable of rotating plane polarized light.
The molecules that are superimposable or identical with their mirror images are known as achiral molecules, and achiral molecules are not capable of rotating the plane-polarized light.
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ORGANIC CHEM LL W/WILEYPLUS BLCKBRD >I
- Which of the following statements are true? Explain.I. If a molecule has a plane of symmetry it is achiral.II. If a molecule has a center of symmetry it is achiral.III. If a molecule has one stereogenic center it is chiral.arrow_forwardStereoisomers share the same connectivity and differ only in the way their atoms are arranged in space. Draw the structure of a compound that is a stereoisomer ofarrow_forwardMark each chiral center in the following molecule with an asterisk. How many stereoisomers are possible for each molecule?arrow_forward
- Is it possible for a meso compound to contain three chiral centers? Why or why not?arrow_forwardDraw a structural formula and Draw the structure of a compound that is a stereoisomerarrow_forwardIs cis-1,2-dibromocyclohexane a meso compound? In its planar structure, it has a line of symmetry but it has two chiral carbons. However, in its chair conformation, it does not look like it has a line of symmetry but it has two chiral carbons.arrow_forward
- Analyze the structure of the two stereoisomers and then determine whether one or both of them is (are) chiral (s). Explain your reasoning.arrow_forwardDraw a formula for the lowest molecular weight compound that contains C, H, and possibly O, N or 5, is a chiral compound, contains ONLY one functional group, and is a sulfide. Use the wedge/hash bond tools to indicate stereochemistry where it exists. Include H atoms at chiral centers only. If a group is achiral, do not use wedged or hashed bonds on it. Alkene or alkyne groups are considered to be functional groups. 98 4 - /IP ChemDoodlearrow_forward1,1'-Bi-2-naphthol is a chiral compound, and its enantiomers can be separated from each other. The enantiomer shown here has a specific rotation of – 32.70° in tetrahydrofuran. (Notice that the two fused-ring systems are not in the same plane. In the top ring system, the left side is in front of the plane of the page, whereas in the bottom ring system, the right side is in front.) HO, OH 1,1'-Bi-2-naphthol (a) How many chiral centers does 1,1'-bi-2-naphthol have? (b) Draw the enantiomer of the molecule shown. What is its specific rotation? (c) Aside from being mirror images of each other, how else are the two enantiomers related? Why do you think they do not readily interconvert? Hint: It may help to construct a molecular model.arrow_forward
- Draw a structural formula of the R configuration of the compound shown below. ÇNH₂ CN • Use the wedge/hash bond tools to indicate stereochemistry where it exists. • Include H atoms at chiral centers only. • If a group is achiral, do not use wedged or hashed bonds on it. #[ ] در ?arrow_forwardDraw all stable isomers of C4H9Cl. Be sure to label cis/trans isomers on rings, Z/E isomers on double bonds as well as R/S on chiral centersarrow_forward3arrow_forward
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