Concept explainers
(a)
Interpretation:
The contributing structures for furan have to be drawn.
Concept Introduction:
Contributing structures:
The double bonds of an
(b)
Interpretation:
The contributing structures for pyridine have to be drawn.
Concept Introduction:
Contributing structures:
The double bonds of an aromatic compound shift back and forth very rapidly which is known as delocalization. The resulted forms or structures cannot be separated and stay in equilibrium with charge separation. Those structures are known as contributing structuresof that compound.
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Chapter 21 Solutions
Organic Chemistry
- Draw and name all aromatic compounds with the formula C7H7Clarrow_forwardskeletal line bond drawing of C6H5CO2H with an aromatic 6 membered ringarrow_forwardHydrocarbon A possesses a significant dipole, even though it iscomposed of only C—C and C—H bonds. Explain why the dipole arisesand use resonance structures to illustrate the direction of the dipole.Which ring is more electron rich?arrow_forward
- A2 1. An alkyne with molecular formula C5H10 2. A ketone with molecular formula C4H8O 3. A ketone with molecular formula C3H8O 4. An alkene with molecular formula C5H8 5. An alkene with molecular formula C5H10 6. An aldehyde with molecular formula C2H4O 7. An aldehyde with molecular formula CH4O 8. A saturated hydrocarbon with molecular formula C6H14arrow_forwardAssign the hydrogens in C7H14O to this structurearrow_forwardThe following compounds a) are NOT resonance structures, they aredifferent compounds. b) The following compound is aromaticarrow_forward
- What is the relationship of the following two compounds?arrow_forwardBiphenyl has the following structure.(a) Is biphenyl a (fused) polynuclear aromatic hydrocarbon?(b) How many pi electrons are there in the two aromatic rings of biphenyl? How does this number compare with that for naphthalene?arrow_forwardCompound B has molecular formula C9H10. The IR spectrum is shown below. The 1H-NMR spectrum shows a multiplet at 7.2 ppm integrating to 4H, a triplet at 2.9 ppm integrating to 4H, and a triplet at 2.1 ppm integrating to 2 H. Suggest a structure for B and explain your reasoningarrow_forward
- What would the conjugate acid of (CH3C≡ C:–) look like in bond-line structure?arrow_forwardDraw the skeletal structure of the following compound: a. carboxylic acid with the molecular formula C4H8O2 b. an ester with molecular formula C4H802 c. a ketone with the molecular formula C4H8O2 d. an aldehyde with the molecular formula C4H8Oarrow_forwardPlease write the answer clearly with the state of matter following each compound.arrow_forward
- Organic ChemistryChemistryISBN:9781305580350Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. FootePublisher:Cengage Learning