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Concept explainers
(a)
Interpretation:
Given substituted axial and equatorial cyclohexane molecule, whether cis isomer or a trans isomer has to be identified.
Concept introduction:
Stereoisomerism (or) geometric isomerism:
It is known as cis-trans isomerism or E-Z isomerism is a form of stereoisomerism the each of two or more chemical compounds having the same molecular formula but a different geometric arrangement; an unsaturated compound or ring compound in which rotation around a carbon bond is restricted, as in (cis) and (trans) configurations know as geometric isomerism.
For example the cyclohexane ring has two substituent’s, must take both substituents into account when predicting which of the two chair conformers is more stable, like 1,4-dimethylcyclohexane has presence two methyl groups in 1,4-positions.
Conformers:
The different spatial arrangements of the atoms the result from rotation about a single bond is called conformational isomers.
(b)
Interpretation:
Given substituted axial and equatorial cyclohexane molecule, whether cis isomer or a trans isomer has to be identified.
Concept introduction:
Stereoisomerism (or) geometric isomerism:
It is known as cis-trans isomerism or E-Z isomerism is a form of stereoisomerism the each of two or more chemical compounds having the same molecular formula but a different geometric arrangement; an unsaturated compound or ring compound in which rotation around a carbon bond is restricted, as in (cis) and (trans) configurations know as geometric isomerism.
For example the cyclohexane ring has two substituent’s, must take both substituents into account when predicting which of the two chair conformers is more stable, like 1,4-dimethylcyclohexane has presence two methyl groups in 1,4-positions.
Conformers:
The different spatial arrangements of the atoms the result from rotation about a single bond is called conformational isomers.
(c)
Interpretation:
Given substituted axial and equatorial cyclohexane molecule, whether cis isomer or a trans isomer has to be identified.
Concept introduction:
Stereoisomerism (or) geometric isomerism:
It is known as cis-trans isomerism or E-Z isomerism is a form of stereoisomerism the each of two or more chemical compounds having the same molecular formula but a different geometric arrangement; an unsaturated compound or ring compound in which rotation around a carbon bond is restricted, as in (cis) and (trans) configurations know as geometric isomerism.
For example the cyclohexane ring has two substituent’s, must take both substituents into account when predicting which of the two chair conformers is more stable, like 1,4-dimethylcyclohexane has presence two methyl groups in 1,4-positions.
Conformers:
The different spatial arrangements of the atoms the result from rotation about a single bond is called conformational isomers.
(d)
Interpretation:
Given substituted axial and equatorial cyclohexane molecule, whether cis isomer or a trans isomer has to be identified.
Concept introduction:
Stereoisomerism (or) geometric isomerism:
It is known as cis-trans isomerism or E-Z isomerism is a form of stereoisomerism the each of two or more chemical compounds having the same molecular formula but a different geometric arrangement; an unsaturated compound or ring compound in which rotation around a carbon bond is restricted, as in (cis) and (trans) configurations know as geometric isomerism.
For example the cyclohexane ring has two substituent’s, must take both substituents into account when predicting which of the two chair conformers is more stable, like 1,4-dimethylcyclohexane has presence two methyl groups in 1,4-positions.
Conformers:
The different spatial arrangements of the atoms the result from rotation about a single bond is called conformational isomers.
(e)
Interpretation:
Given substituted axial and equatorial cyclohexane molecule, whether cis isomer or a trans isomer has to be identified.
Concept introduction:
Stereoisomerism (or) geometric isomerism:
It is known as cis-trans isomerism or E-Z isomerism is a form of stereoisomerism the each of two or more chemical compounds having the same molecular formula but a different geometric arrangement; an unsaturated compound or ring compound in which rotation around a carbon bond is restricted, as in (cis) and (trans) configurations know as geometric isomerism.
For example the cyclohexane ring has two substituent’s, must take both substituents into account when predicting which of the two chair conformers is more stable, like 1,4-dimethylcyclohexane has presence two methyl groups in 1,4-positions.
Conformers:
The different spatial arrangements of the atoms the result from rotation about a single bond is called conformational isomers.
(f)
Interpretation:
Given substituted axial and equatorial cyclohexane molecule, whether cis isomer or a trans isomer has to be identified.
Concept introduction:
Stereoisomerism (or) geometric isomerism:
It is known as cis-trans isomerism or E-Z isomerism is a form of stereoisomerism the each of two or more chemical compounds having the same molecular formula but a different geometric arrangement; an unsaturated compound or ring compound in which rotation around a carbon bond is restricted, as in (cis) and (trans) configurations know as geometric isomerism.
For example the cyclohexane ring has two substituent’s, must take both substituents into account when predicting which of the two chair conformers is more stable, like 1,4-dimethylcyclohexane has presence two methyl groups in 1,4-positions.
Conformers:
The different spatial arrangements of the atoms the result from rotation about a single bond is called conformational isomers.
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Chapter 3 Solutions
Organic Chemistry (8th Edition)
- a) a chain isomer, (b) a positional isomer, and (c) a functional isomer of hexan-1-olarrow_forward1) In chemistry, isomers do not necessarily share similar chemical or physical properties. Two main forms of isomerism are constitutional isomer and stereoisomer. a) Illustrate the term of constitutional isomer.arrow_forward"The cis isomer has two groups on the same side of the double bond" Define this ?arrow_forward
- Can cyclopentene exhibit cis-trans isomerism? Explain.arrow_forwardWhich of the following compounds can exist as cis-trans isomers? b) For those compounds that can exist as cis and trans isomers, draw and label the isomers. 1. CH3CH=CHCH2CH2CH3 2. CH3CH2CCH2CH3=CHCH3 3. CH3CH=CHCH3 4. CH3CH2CH=CH2arrow_forwardDraw an isomer for the molecule C4H8. Do not draw geometric isomers (i.e., cis-trans isomers).arrow_forward
- Structural isomers are compounds with same molecular formula, same functional groups, but different structural formulas. O True O Falsearrow_forwardWhat is cis-trans isomerism in alkenes? cis-trans isomerism in alkenes involves having the major groups in an alkene on the same or opposite side of the double bond cis-trans isomerism in alkenes involves having different or identical substituents at the both ends of the double bond cis-trans isomerism in alkenes involves having the major groups in an alkene in staggered or eclipsed conformations cis-trans isomerism in alkenes involves different location of double bond along the carbon chainarrow_forwardIdentifying organic functional groups Name the family to which each organic compound belongs.arrow_forward
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