Homework Answers
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1. Diastereomers
2. Identical Achiral compounds
3. Chiral with nonsuoerimposable mirror images
4. Diastereomers
5. Diastereomers
6. Diastereomers
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Part Build models for the two isomers of 1-iodo-1-propene, then complete...
I CHE cis-1-iodo-1-propene trans-1-iodo-1-propene Match the phrases in the left column to the appropriate blanks in...
I CHE cis-1-iodo-1-propene trans-1-iodo-1-propene Match the phrases in the left column to the appropriate blanks in the sentences on the right. Make certain each sentence is complete before submitting your answer. ► View Available Hint(s) 1. Try to manipulate the cis and trans isomers of 1-iodo-1-propene by chiral with superimposable mirror images rotating bonds, but without breaking bonds. The two structures are diastereomers (stereoisomers that are not superimposable mirror images) 2. Starting with cis-1-iodo-1-propene add two bromine atom across the...
Astillman.Instructure.com Terms: Molecular formula Conformational isomers Double bond isomers Ether Alcohol Stereoisomers Geometric isomers Enantiomers Diastereomers...
Astillman.Instructure.com Terms: Molecular formula Conformational isomers Double bond isomers Ether Alcohol Stereoisomers Geometric isomers Enantiomers Diastereomers Stereoisomers A compound with an oxygen bonded between two alkyl (or aromatic) groups. [Choose Stereoisomers that differ in their cis-trans arrangement on a double bond or on a ring. [Choose <> The number of atoms of each element in one molecule of a compound. [Choose + Stereoisomers that are not mirror images. [Choose [Choose Isomers whose atoms are connected differently, they differ in their...
A. Enantiomers: Certain substances have the unique property of rotating the plane of plane-polarized light. Such...
A. Enantiomers: Certain substances have the unique property of rotating the plane of plane-polarized light. Such light rotation is detectable with the aid of a polarimeter. In order for a molecule to be optically active it must be chiral. Chiral objects lack a plane of symmetry and are non-superimposable on their mirror images. A sp?- hybridized carbon atom can fulfill these requirements if all four of its substituents are different. 1. Methane a) Prepare a methane molecule and then substitute...
3. Cyclic compounds The presence of the ring in all but very large ring cyclic molecules...
3. Cyclic compounds The presence of the ring in all but very large ring cyclic molecules prevents full rotation of the ring atoms. For this reason, stereoisomerism may also occur in cyclic molecules. a) Prepare a model of cyclohexane, C6H12. Draw the condensed formula. b) Build a model of methylcyclohexane (C7H14) by replacing one of the hydrogens of cyclohexane with a methyl group. Draw the skeletal formula for methylcyclohexane. 2 c) How many different isomers exist for methylcyclohexane (CyH34)? d)...
The following is a schematic diagram of the isomer explanation. Describe each term related to isomers....
The following is a schematic diagram of the isomer explanation. Describe each term related to isomers.
Do the compounds have the same molecular formulae ? NO Not isomers YES Isomers Do the compounds have the same connectivity? NO YES Constitutional Stereoisomers Can the compounds be interconverted by rotation about single bonds ? NO YES Configurational Conformational Is the isomerism at a double bond? YES NO HY пн . сн, ң,с сн. Geometric Optical Are the compounds non-superimposable mirror images? NO...
help Part A: Molecular Modeling 1. Models of 1,2-Dibromoethene Br, H Br Br C= C H...
help
Part A: Molecular Modeling 1. Models of 1,2-Dibromoethene Br, H Br Br C= C H Br trans-1, 2-dibromeoethene cis-1, 2-dibromoethene A (trans) B (cis) Figure 7.2. Geometric Isomers. Procedure Part A Construct a model of 1,2-dibromoethene (CHBr=CHBr) so that if viewed from above and in front, see Figure 7.2. Answer all questions on report sheet. 1. Are the models superimposable? 2. Are A and B stereoisomers? Are they enantiomers or diastereomers? 3. Name A, use the E-Z system. 4....
TU c) Start with the model of propene built in 3a), substituting different hydrogen atoms of...
TU c) Start with the model of propene built in 3a), substituting different hydrogen atoms of propene with a methyl group to form isomers of butene, CaHg. How many different isomers exist for butene (C4Hg)? Prepare models and draw the Lewis structures for each of the isomers. d) Two of isomers of butene comprise a pair of stereoisomers. Draw the skeletal structures and include IUPAC names for the cis and trans isomers. Recall in the cis isomer both methyl groups...
Exercise 2: Geometric isomers. Build plastic models of cis- and trans-1,2-dibromoethene. Confirm that the two models...
Exercise 2: Geometric isomers. Build plastic models of cis- and trans-1,2-dibromoethene. Confirm that the two models are not superimposable. (2) For Draw a top view (atoms in plane) and side view (wedge) for each structure. Exercise 3: Cyclohexane. Build a plastic model of cyclohexane and rotate all C – C bonds into the staggered conformation. (3) Sketch the chair conformation you have constructed.
19-26 thanks! 19-29* PART 3: 2,3-BUTANEDIOL CH-CH(OH)-CH(OH)-CH, mirror images, not superimposable Build as many models of...
19-26 thanks!
19-29*
PART 3: 2,3-BUTANEDIOL CH-CH(OH)-CH(OH)-CH, mirror images, not superimposable Build as many models of 2,3-butanediol as you can. First, attach two carbons with a single bond. To each carbon add one carbon, one hydrogen, and one oxygen. To complete the structure, Ti the remaining hydrogen atoms. Remember, a model is not different if it is completely superimposable on one already constructed! 13. How many stereochemically different models are possible for 2,3-butanediol? 14. What characteristic does one of these...
Procedure B. 1. Build two models of 1, 2-dimethyleyclopentane. The two methy can be on the...
Procedure B. 1. Build two models of 1, 2-dimethyleyclopentane. The two methy can be on the same face or opposite faces of the ring. No matter how t molecule is twisted, they cannot be superimposed on each other. These compounds are stereoisomers of each other. 2. When two groups are present, the prefix cis (same face) or trans (opposite face) can be used in IUPAC nomenclature to specify which stereoisomer is being considered. For drawings, a solid wedged line in...
I CHE cis-1-iodo-1-propene trans-1-iodo-1-propene Match the phrases in the left column to the appropriate blanks in the sentences on the right. Make certain each sentence is complete before submitting your answer. ► View Available Hint(s) 1. Try to manipulate the cis and trans isomers of 1-iodo-1-propene by chiral with superimposable mirror images rotating bonds, but without breaking bonds. The two structures are diastereomers (stereoisomers that are not superimposable mirror images) 2. Starting with cis-1-iodo-1-propene add two bromine atom across the...
Astillman.Instructure.com Terms: Molecular formula Conformational isomers Double bond isomers Ether Alcohol Stereoisomers Geometric isomers Enantiomers Diastereomers Stereoisomers A compound with an oxygen bonded between two alkyl (or aromatic) groups. [Choose Stereoisomers that differ in their cis-trans arrangement on a double bond or on a ring. [Choose <> The number of atoms of each element in one molecule of a compound. [Choose + Stereoisomers that are not mirror images. [Choose [Choose Isomers whose atoms are connected differently, they differ in their...
A. Enantiomers: Certain substances have the unique property of rotating the plane of plane-polarized light. Such light rotation is detectable with the aid of a polarimeter. In order for a molecule to be optically active it must be chiral. Chiral objects lack a plane of symmetry and are non-superimposable on their mirror images. A sp?- hybridized carbon atom can fulfill these requirements if all four of its substituents are different. 1. Methane a) Prepare a methane molecule and then substitute...
3. Cyclic compounds The presence of the ring in all but very large ring cyclic molecules prevents full rotation of the ring atoms. For this reason, stereoisomerism may also occur in cyclic molecules. a) Prepare a model of cyclohexane, C6H12. Draw the condensed formula. b) Build a model of methylcyclohexane (C7H14) by replacing one of the hydrogens of cyclohexane with a methyl group. Draw the skeletal formula for methylcyclohexane. 2 c) How many different isomers exist for methylcyclohexane (CyH34)? d)...
The following is a schematic diagram of the isomer explanation. Describe each term related to isomers.
Do the compounds have the same molecular formulae ? NO Not isomers YES Isomers Do the compounds have the same connectivity? NO YES Constitutional Stereoisomers Can the compounds be interconverted by rotation about single bonds ? NO YES Configurational Conformational Is the isomerism at a double bond? YES NO HY пн . сн, ң,с сн. Geometric Optical Are the compounds non-superimposable mirror images? NO...
help
Part A: Molecular Modeling 1. Models of 1,2-Dibromoethene Br, H Br Br C= C H Br trans-1, 2-dibromeoethene cis-1, 2-dibromoethene A (trans) B (cis) Figure 7.2. Geometric Isomers. Procedure Part A Construct a model of 1,2-dibromoethene (CHBr=CHBr) so that if viewed from above and in front, see Figure 7.2. Answer all questions on report sheet. 1. Are the models superimposable? 2. Are A and B stereoisomers? Are they enantiomers or diastereomers? 3. Name A, use the E-Z system. 4....
TU c) Start with the model of propene built in 3a), substituting different hydrogen atoms of propene with a methyl group to form isomers of butene, CaHg. How many different isomers exist for butene (C4Hg)? Prepare models and draw the Lewis structures for each of the isomers. d) Two of isomers of butene comprise a pair of stereoisomers. Draw the skeletal structures and include IUPAC names for the cis and trans isomers. Recall in the cis isomer both methyl groups...
19-26 thanks!
19-29*
PART 3: 2,3-BUTANEDIOL CH-CH(OH)-CH(OH)-CH, mirror images, not superimposable Build as many models of 2,3-butanediol as you can. First, attach two carbons with a single bond. To each carbon add one carbon, one hydrogen, and one oxygen. To complete the structure, Ti the remaining hydrogen atoms. Remember, a model is not different if it is completely superimposable on one already constructed! 13. How many stereochemically different models are possible for 2,3-butanediol? 14. What characteristic does one of these...
Procedure B. 1. Build two models of 1, 2-dimethyleyclopentane. The two methy can be on the same face or opposite faces of the ring. No matter how t molecule is twisted, they cannot be superimposed on each other. These compounds are stereoisomers of each other. 2. When two groups are present, the prefix cis (same face) or trans (opposite face) can be used in IUPAC nomenclature to specify which stereoisomer is being considered. For drawings, a solid wedged line in...
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