Concept explainers
(a)
Interpretation:
- The resonance contributors for the following species has to be predicted.
Concept Introduction:
Resonance Contributor: The appropriate structure with the localized electrons is called a resonance contributor, a resonance structure, or a contributing resonance structure.
Delocalized electrons: The sharing of electrons between two or more atoms known as delocalization of electrons. In order to have delocalized electrons, the system must be planar and have alternative double bonds and single bonds.
Resonance hybrid: The actual structure with delocalized electrons is called a resonance hybrid.
(b)
Interpretation:
- The resonance contributors for the given compounds has to be predicted.
Concept Introduction:
Resonance Contributor: The appropriate structure with the localized electrons is called a resonance contributor, a resonance structure, or a contributing resonance structure.
Delocalized electrons: The sharing of electrons between two or more atoms known as delocalization of electrons. In order to have delocalized electrons, the system must be planar and have alternative double bonds and single bonds.
Resonance hybrid: the actual structure with delocalized electrons is called a resonance hybrid.
(c)
Interpretation:
- The resonance contributors for the given compounds has to be predicted.
Concept Introduction:
Resonance Contributor: The appropriate structure with the localized electrons is called a resonance contributor, a resonance structure, or a contributing resonance structure.
Delocalized electrons: The sharing of electrons between two or more atoms known as delocalization of electrons. In order to have delocalized electrons, the system must be planar and have alternative double bonds and single bonds.
Resonance hybrid: the actual structure with delocalized electrons is called a resonance hybrid.
(d)
Interpretation:
- The resonance contributors for the given compounds to be predicted.
Concept Introduction:
Resonance Contributor: The appropriate structure with the localized electrons is called a resonance contributor, a resonance structure, or a contributing resonance structure.
Delocalized electrons: The sharing of electrons between two or more atoms known as delocalization of electrons. In order to have delocalized electrons, the system must be planar and have alternative double bonds and single bonds.
Resonance hybrid: the actual structure with delocalized electrons is called a resonance hybrid.
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Organic Chemistry (8th Edition)
- a. Draw resonance contributors for the following species, showing all the lone pairs: 1. CH2N2 2. N2O 3. NO2- b. For each species, indicate the most stable resonance contributor.arrow_forwardThe pKa of hydroxyl a on the compound is 7.15, while the pKa of hydroxyl b is 9.3. What key resonance structure explains that difference?arrow_forwardWhat is the major product fromed from the reaction below?arrow_forward
- Identify A–F in the following reactions.arrow_forwardAssign the resonances in Figure 40.8 to specific protons inmethyl benzoate. (benzene ring attached to COOCH3) The 1H NMR peaks are at about 3.9, 7.5, and 8.1PPMarrow_forwardWhich loses a proton more readily: a methyl group bonded to cyclohexane or a methyl group bonded to benzene?arrow_forward
- Which is the major resonance contributor?arrow_forwardWhat are the three resonance contributors and which one is the most stable form?arrow_forwardThe pKa of p-cyclopropylbenzoic acid is 4.45. Is cyclopropylbenzene likely to be more reactive or less reactive than benzene toward electrophilic bromination? Explain.arrow_forward
- Addition of mesitylene to the strongly acidic solvent HF / SbF5 at -45 °C gives a new species which shows a 1H-NMR resonance at δ 4.67 (2H). Draw the structure of this species.arrow_forward1) Which reaction is likely to be more exergonic, one with Keq = 1000 or one with Keq = 0.001?arrow_forwardDraw resonance contributors for the following species and rank them in order of decreasing contribution to the resonance hybrid. Then draw the resonance hybrid.arrow_forward