Organic Chemistry
9th Edition
ISBN: 9781305080485
Author: John E. McMurry
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 15.SE, Problem 17VC
Azulene, an isomer of naphthalene, has a remarkably large dipole moment for a hydrocarbon (μ = 1.0 D). Explain, using resonance structures.
Expert Solution & Answer
Trending nowThis is a popular solution!
Students have asked these similar questions
Acetonitrile (CH3CN) has resonance at 1.97 ppm, whereas methyl chloride (CH3Cl) has resonance at 3.05 ppm, even though the dipole moment of acetonitrile is 3.92 D and that of methyl chloride is only 1.85 D. The larger dipole moment for the cyano group suggests that the electronegativity of this group is greater than that of the chlorine atom. Explain why the methyl hydrogens on acetonitrile are actually more shielded than those in methyl chloride, in contrast with the results expected on the basis of electronegativity
(a) Explain bonding of methanol in terms of hybridization.
The bonding between the carbon and oxygen in a ketone can be described as C(sp2)-0(sp²),
o-bond and C(p)-O(p), л-bond.
How would you describe the bonding between carbon and oxygen in a ketene?
Sketch the orbitals used to make the bonds in the ketene.
H
a ketene
Chapter 15 Solutions
Organic Chemistry
Ch. 15.1 - Prob. 1PCh. 15.1 - Give IUPAC names for the following compounds:Ch. 15.1 - Prob. 3PCh. 15.2 - Pyridine is a flat, hexagonal molecule with bond...Ch. 15.3 - Prob. 5PCh. 15.4 - Draw the five resonance structures of the...Ch. 15.4 - Prob. 7PCh. 15.4 - Prob. 8PCh. 15.5 - Prob. 9PCh. 15.5 - Prob. 10P
Ch. 15.6 - Prob. 11PCh. 15.6 - How many electrons does each of the four nitrogen...Ch. 15.SE - Give IUPAC names for the following substances (red...Ch. 15.SE - All-cis cyclodecapentaene is a stable molecule...Ch. 15.SE - 1, 6-Methanonaphthalene has an interesting 1H NMR...Ch. 15.SE - Prob. 16VCCh. 15.SE - Azulene, an isomer of naphthalene, has a...Ch. 15.SE - Give IUPAC names for the following compounds:Ch. 15.SE - Draw structures corresponding to the following...Ch. 15.SE - Prob. 20APCh. 15.SE - Prob. 21APCh. 15.SE - Draw and name all possible aromatic compounds with...Ch. 15.SE - Propose structures for aromatic hydrocarbons that...Ch. 15.SE - Look at the three resonance structures of...Ch. 15.SE - Prob. 25APCh. 15.SE - Prob. 26APCh. 15.SE - Look at the five resonance structures for...Ch. 15.SE - Prob. 28APCh. 15.SE - 3-Chlorocyclopropene, on treatment with AgBF4,...Ch. 15.SE - Prob. 30APCh. 15.SE - Prob. 31APCh. 15.SE - Prob. 32APCh. 15.SE - Which would you expect to be most stable,...Ch. 15.SE - How might you convert 1, 3, 5, 7-cyclononatetraene...Ch. 15.SE - Calicene, like azulene (Problem 15-17), has an...Ch. 15.SE - Pentalene is a most elusive molecule that has been...Ch. 15.SE - Prob. 37APCh. 15.SE - Prob. 38APCh. 15.SE - Compound A, C8H10, yields three substitution...Ch. 15.SE - Prob. 40APCh. 15.SE - Propose structures for compounds that fit the...Ch. 15.SE - Prob. 42APCh. 15.SE - Prob. 43APCh. 15.SE - N-Phenylsydnone, so-named because it was first...Ch. 15.SE - Prob. 45APCh. 15.SE - Prob. 46APCh. 15.SE - Prob. 47APCh. 15.SE - Propose a structure for a molecule C14H12 that has...Ch. 15.SE - The proton NMR spectrum for a compound with...Ch. 15.SE - The proton NMR spectrum of a compound with formula...Ch. 15.SE - Aromatic substitution reactions occur by addition...Ch. 15.SE - Prob. 52APCh. 15.SE - Consider the aromatic anions below and their...Ch. 15.SE - After the reaction below, the chemical shift of Ha...Ch. 15.SE - Prob. 55APCh. 15.SE - Azo dyes are the major source of artificial color...
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.Similar questions
- The pentadienyl radical, H2C“CH¬CH“CH¬CH2#, has its unpaired electron delocalized over three carbon atoms.(a) Use resonance forms to show which three carbon atoms bear the unpaired electron.(b) How many MOs are there in the molecular orbital picture of the pentadienyl radical?arrow_forwardCyanic acid (HOCN) and isocyanic acid (HNCO) dissolve in water to give the same anion upon deprotonation. (i) Draw Lewis structures for cyanic acid and isocyanic acid. (ii) Using arrow pushing and resonance, account for the fact that each acid gives the same anion on loss of H+ when reacted with NaOH.arrow_forwardThe pentadienyl radical, H2C“CH¬CH“CH¬CH2#, has its unpaired electron delocalized over three carbon atoms.(a) Use resonance forms to show which three carbon atoms bear the unpaired electron.(b) How many MOs are there in the molecular orbital picture of the pentadienyl radical?(c) How many nodes are there in the lowest-energy MO of the pentadienyl system? How many in the highest-energy MO?(d) Draw the MOs of the pentadienyl system in order of increasing energy. (continued)762 CHAPTER 15 Conjugated Systems, Orbital Symmetry, and Ultraviolet Spectroscopy(e) Show how many electrons are in each MO for the pentadienyl radical (ground state).(f) Show how your molecular orbital picture agrees with the resonance picture showing delocalization of the unpairedelectron onto three carbon atoms.(g) Remove the highest-energy electron from the pentadienyl radical to give the pentadienyl cation. Which carbon atomsshare the positive charge? Does this picture agree with the resonance picture?(h) Add an…arrow_forward
- The pentadienyl radical, H2C“CH¬CH“CH¬CH2#, has its unpaired electron delocalized over three carbon atoms.(a) Use resonance forms to show which three carbon atoms bear the unpaired electron.(b) How many MOs are there in the molecular orbital picture of the pentadienyl radical?(c) How many nodes are there in the lowest-energy MO of the pentadienyl system? How many in the highest-energy MO?(d) Draw the MOs of the pentadienyl system in order of increasing energyarrow_forwardSpecify whether the two structures are resonance contributors to the same resonance hybrid. Be sure to explain your reasoning. If yes, be sure to specify which is preferred and why. H2C=NH2arrow_forwardWhy is benzene less reactive than hexane in terms of stability of free radicals?arrow_forward
- Draw a resonance structure of the acetonitrile anion, :CH2C =N, and account for the acidity of nitriles.arrow_forwardThe compound whose structure is shown here is acetyl acetone. It exists in two forms:the enol form and the keto form The molecule reacts with OH–to form an anion, [CH3COCHCOCH3] (often abbreviatedacac–for acetylacetonate ion). One or the most interesting aspects of this anion is thatone or more of them can react with transition metal cations to give stable, highlycolored compounds (a) Are the keto and enol forms of acetylacetone resonance forms? Explain youranswer.(b) What is the hybridization or each atom (except H) in the enol form? What changesin hybridization occur when it is transformed into the keto form?(c) What are the electron-pair geometry and molecular geometry around each C atomin the keto and enol forms? What changes in geometry occur when the keto formchanges to the enol form?(d) Draw three possible resonance structures for the acac–ion.(e) Is cis-trans isomerism possible in either the enol or the keto form of acetylacetone?(f) Is the enol form of acetylacetone polar?…arrow_forward(b) The structure of heptalene (2E) is shown below. Answer the following questions: (i) Is heptalene aromatic, non-aromatic, or anti-aromatic? (ii) 2E can be readily protonated to form a more stable species. Draw the structure of the protonated 2E and explain the stability. heptalene (2E)arrow_forward
- Two useful organic compounds that contain Cl atoms are vinyl chloride (CH2 = CHCI) and chloroethane (CH;CH;CI). Vinyl chloride is the starting material used to prepare poly (vinyl chloride), a plastic used in insulation, pipes, and bottles. Chloroethane (ethyl chloride) is a local anesthetic. Why is the C- Cl bond of vinyl chloride stronger than the C– CIl bond in chloroethane.arrow_forwardAcridine is a heterocyclic aromatic compound obtained from coal tar that is used in the synthesis of dyes. The molecular formula of acridine is C13H9N, and its ring system is analogous to that of anthracene except that one CH group has been replaced by N. The two most stable resonance structures of acridine are equivalent to each other, and both contain a pyridine-like structural unit. Write a structural formula for acridine.arrow_forward(b) (1-chloromethyl)cyclopentane, CeH11CI reacts with aqueous sodium hydroxide, NaOH to produce a primary alcohol AA. When CeH11Cl is added with magnesium, Mg in ether, an organometallic compound BB is formed. When compound BB reacts with ethanal, CH3CHO, a secondary alcohol cCis formed. The molecular structure of CeH11Cl is given below. (1-klorometil)siklopentana, CoH1,CI bertindak balas dengan akues natrium hidroksida, NaOH bagi menghasilkan satu alkohol primer AA. Apabila CeH11CI ditambah dengan magnesium, Mg dalam eter, sebatian organologam BB terbentuk. Apabila sebatian BB bertindak balas dengan etanal, CH;CHO, satu alkohol sekunder CC dihasilkan. Struktur molekul bagi CsH11CI diberikan di bawah. .CI (1-chloromethyl)cyclopentane (i) Draw the structural formula for compound AA through Cc. Lukiskan formula struktur bagi sebatian AA sehingga C. (ii) What is the type of reaction to produce compound AA? Apakah jenis tindak balas untuk menghasilkan sebatian AA?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Types of bonds; Author: Edspira;https://www.youtube.com/watch?v=Jj0V01Arebk;License: Standard YouTube License, CC-BY