5. Construct models of all the stereoisomers of 1-bromopropene. Draw the line structure of your models. Are these molecules isomers? If they are isomers to what specific category do they belong? Assign E or Z descriptors to each compound, if appropriate. 6. Construct a model of dibromochloromethane and draw the perspective structure. How many planes of symmetry does this molecule possess? Construct the mirror image of your model. Are the two models superimposable? Classify or describe the relationship between these two mirror images, and assign R or S descriptors, if appropriate.

5. Construct models of all the stereoisomers of 1-bromopropene. Draw the line structure of your models. Are these molecules isomers? If they are isomers to what specific category do they belong? Assign E or Z descriptors to each compound, if appropriate. 6. Construct a model of dibromochloromethane and draw the perspective structure. How many planes of symmetry does this molecule possess? Construct the mirror image of your model. Are the two models superimposable? Classify or describe the relationship between these two mirror images, and assign R or S descriptors, if appropriate.

Organic Chemistry: A Guided Inquiry

2nd Edition

ISBN:9780618974122

Author:Andrei Straumanis

Publisher:Andrei Straumanis

Chapter12: Chirality

Section: Chapter Questions

Problem 9E

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Similar questions

5. Draw the perspective structure of 1,3-dibromobutane and label any asymmetric carbon atoms with a start (*). Draw the mirror image for the compound and indicate the corresponding (R) and (S) configuration for each structure.
1. How many chiral (stereocenters) centers are in the following molecules? Recall that a chiral center will have a carbon atom bonded to four different substituents. Please circle the chiral centers. Structure I HO... III. Br !!! СОН Structure II NH2
2) a) Consider the following molecule hybridization theory, draw an image or images explaining the bonding situation in this molecule. I want you to draw out all of the orbitals, hybrid orbitals and how they overlap to form the bonds in the molecule. Indicate the % s or p character in the given atomic and hybrid orbitals. Which C-C bond or bonds are the longest? In a paragraph or so explain the image or images you just drew. Given what you have learned about
6. Use the molecule below to answer the following questions. a) Name the following molecule. b) Why is it necessary to provide R or S designation in order to clearly communicate molecular structure for this molecule? c) How many stereoisomers of this molecule are possible? Which of them are enantiomers to each other? Which are diastereomers? SH ICN
F) Circle the letter corresponding to the relationship of each pair of structures: Identical (I), Conformers (C), Enantiomers (E) (enantiomers can have different conformations). FIRST... determine the absolute configuration of chiral centers. H. ІН' I H | H с H Me E Me
Construct a model in which a tetrahedral carbon atom has four different colored model atoms attached to it- red, green, orange and white representing 4 different atoms attached to the central atom. a) Does the atom have a plane of symmetry? why or why not? b) Now replace the green atom in your model with a second orange atom. Now two of the groups attached to the carbon atom are identical. Does the model now have a plane of symmetry? Describe it. c)A carbon atom has four different groups attached to the stereogenic center. Draw structural formulas for the following compound and mark stereogenic centers with as asterisk: 1-bromobutane, 2-bromobutane, 1,2-dibromobutane, 1,4-dibromobutane, 2,3-dibromobutane.
Consider molecules with more than one chiral center. Consider 2,3-dyhdroxybutanoic acid. a. How many chiral centers does it have? b. Which ones? c. Reproduce the structure and encircle the four groups, which are linked to each chiral carbon.
7. Draw curved arrows indicating the movements of electrons between the following pair of resonance structures. Name the pattern of resonance shown. What is the hybridization of the carbon atoms? 8. Draw the remaining three resonance structures for the molecule in problem 7 above. 9. There are several possible forms of a trisubstituted cyclohexane with the formula C10H200. I have drawn four of them. From these, which one do you think is most commonly naturally occurring, and why? Which is least commonly occurring and why? HO HO" HO HO
Draw a model of ethane. Imagine rotating the C-C single bond. a. Is there a change in the relative positions of the different atoms as the C-C bond is rotated? Yes or No? b. Does the ethane molecule have more than one conformation? Yes or No?
1. Draw the mirror image of the molecule shown in the figure above 2. Change the configuration of carbon #1 by exchanging the position of bromine and hydrogen atom then write the mirror image of the molecule 3. Identify the configuration of carbon #1 and #2 in all of the stereoisomers. 4. Label the stereoisomers (Example: A, B, C, D, E, F ....) and identify the relationship of each pair of stereoisomers.
! ( ans 3 which explanation , give reason for each option why correct and why incorrect )
Draw the cis isomer of the structure shown below. D • Use the wedge/hash bond tools to indicate stereochemistry where it exists. • In cases where there is more than one answer, just draw one. If the structure does not have cis/trans isomers, simply redraw the molecule without stereobonds.