3. For each pair of the following molecules, indicate whether its members are identical, structural isomers, conformers, or stercoisomers. How would you describe the relation between conforma- tions when they are maintained at a temperature too low to permit them to interconvert? CH, and CH CH, CIKH CH, CH, (h) nd CH CH. CH. CKH.CH CHCH. and (d) and H. OCH, and OCH, in Be CH. anl CH, and (h CH,
3. For each pair of the following molecules, indicate whether its members are identical, structural isomers, conformers, or stercoisomers. How would you describe the relation between conforma- tions when they are maintained at a temperature too low to permit them to interconvert? CH, and CH CH, CIKH CH, CH, (h) nd CH CH. CH. CKH.CH CHCH. and (d) and H. OCH, and OCH, in Be CH. anl CH, and (h CH,
Chapter22: Organic And Biological Molecules
Section: Chapter Questions
Problem 6RQ: Distinguish between isomerism and resonance. Distinguish between structural and geometric isomerism....
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Transcribed Image Text:5:48 C
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Assignaent bookker. Organic Clem. Bachrior's Prog.
Dr. Mohanmal Abxlulkarim Talag
3. For each pair of the following molecules, indicate whether its members are identical, structural
isomers, conformers, or stercoisomers. How would you describe the relation between conforma- tions
when they are maintained at a temperature too low to permit them to interconvert?
a CH,CH,CH, C
CH.
and CH,CH,CHCH,CH,
(h)
and
CH.
CKHCH
LOH
CHCH.
он
OH
Br.
(d)
H.
and
(e)
and
H.
(e) CHCCH CHCH, and CHCHCHCHCH.
OCH,
and
OCH,
D.
Be
and
CH,
and
(h)
CH,
4. Which of the following compounds are chiral? (Hint: Look for stercocenters.)
(a) 2-Methylheptane (d) 1,1-Dibromopropane (g) Ethene, HCPCH,
(b) 3-Methylheptane (e) 4-Methylheptane (e) 1,2-Dibromopropane (f) 1,3-Dibromopropane (h)
Ethyne
5. Each of the following molecules has the molecular formula C,H,,0 (check for yourself). Which ones
are chiral?
HO,
(a)
(b)
OH
(d)
OH
(el
6. Draw cither one of the enantiomers for cach chiral molocule in Problem 5 and label its stereo-
center as Ror S.
7 Circle each chiral molecule. Put a star (*) next to each chiral carhon and label it as R or S.
2
Copyright © 2021, Mohammad Talaq. Permission required for reproduction or display.
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Assignment beoket, Organic Chem, Bachrkor's Pog.
Dr. Mohanmaad Alxlulkarim Talag
H
H.C
H.C
CHCI
,
CH, CI
H.C.
CH
HC.
CH,
Br H
8. For each pair of structures shown, indicate whether the two species are constitutional isomers,
enantiomers, reomers of one another, entical molecules.
CH
CH,
CH,
and
b) F ta
and
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