Textbook Question
Give Lewis structures corresponding to the following line–angle structures. Give the molecular formula for each structure.
(a)
(b)
1
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Ch.1 - Structure and Bonding
Wade9th EditionOrganic ChemistryISBN: 9780135213728
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Table of contents
- Ch.1 - Structure and Bonding107
- Ch. 2 - Acids and Bases; Functional Groups115
- Ch.3 - Structure and Stereochemistry of Alkanes100
- Ch.4 - The Study of Chemical Reactions99
- Ch.5 - Stereochemistry93
- Ch.6 - Alkyl Halides; Nucleophilic Substitution118
- Ch. 7 - Structure and Synthesis of Alkenes; Elimination158
- Ch.8 - Reactions of Alkenes171
- Ch.9 - Alkynes91
- Ch.10 - Structure and Synthesis of Alcohols143
- Ch.11 - Reactions of Alcohols104
- Ch. 12 - Infrared Spectroscopy and Mass Spectrometry22
- Ch. 13 - Nuclear Magnetic Resonance Spectroscopy45
- Ch. 14 - Ethers, Epoxides, and Thioethers72
- Ch. 15 - Conjugated Systems, Orbital Symmetry, and Ultraviolet Spectroscopy89
- Ch. 16 - Aromatic Compounds74
- Ch. 17 - Reactions of Aromatic Compounds126
- Ch. 18 - Ketones and Aldehydes193
- Ch. 19 - Amines129
- Ch. 20 - Carboxylic Acids77
- Ch. 21 - Carboxylic Acid Derivatives141
- Ch. 22 - Condensations and Alpha Substitutions of Carbonyl Compounds175
- Ch. 23 - Carbohydrates and Nucleic Acids93
- Ch. 24 - Amino Acids, Peptides, and Proteins54
Chapter 1, Problem 11d,e
Draw complete Lewis structures for the following condensed structural formulas.
(d) CH2CHCHO
(e) (CH3)3CCOCHCH2
Verified step by step guidance1
Identify the functional groups and connectivity in the condensed structural formula. The formula CH2CHCHO(CH3)3CCOCHCH2 suggests the presence of alkenes, carbonyl groups, and possibly branching due to the (CH3)3 group.
Start by drawing the main carbon chain. The sequence CH2CHCHO indicates a chain of three carbon atoms with a double bond between the first and second carbon atoms (CH2=CH) and a carbonyl group (C=O) on the third carbon.
Add the branching group (CH3)3C. This indicates a tertiary butyl group, which is a central carbon atom bonded to three methyl groups. Attach this group to the appropriate carbon in the main chain, likely the carbonyl carbon based on typical structural conventions.
Incorporate the remaining part of the structure, CCOCHCH2. This suggests a continuation of the carbon chain with a carbonyl group (C=O) followed by a double bond (CH=CH2). Ensure that all carbons have four bonds, using hydrogen atoms to satisfy any remaining valencies.
Verify the structure by counting the total number of carbon, hydrogen, and oxygen atoms to ensure they match the original condensed formula. Check for any formal charges and adjust lone pairs or bonds as necessary to complete the Lewis structure.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Lewis Structures
Lewis structures are diagrams that represent the bonding between atoms of a molecule and the lone pairs of electrons that may exist. They are essential for visualizing the arrangement of atoms, the distribution of electrons, and the connectivity within a molecule. Understanding how to draw Lewis structures involves knowing the valence electrons for each atom and how they share or transfer electrons to form bonds.
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Condensed Structural Formulas
Condensed structural formulas are a shorthand way of representing the molecular structure of a compound. They show the arrangement of atoms in a molecule without explicitly depicting all the bonds. Interpreting these formulas requires recognizing groups of atoms and understanding how they are connected, which is crucial for converting them into full Lewis structures.
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Functional Groups
Functional groups are specific groups of atoms within molecules that have characteristic properties and reactivity. Recognizing functional groups such as carbonyls (C=O) or alkenes (C=C) in a condensed formula helps in predicting the molecule's behavior and drawing accurate Lewis structures. They are key to understanding the chemical properties and reactions of organic compounds.
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Related Practice
Textbook Question
Give Lewis structures corresponding to the following line–angle structures. Give the molecular formula for each structure.
(c)
(d)
2
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Textbook Question
Give Lewis structures corresponding to the following line–angle structures. Give the molecular formula for each structure.
(e)
(f)
1
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Textbook Question
Use resonance structures to identify the areas of high and low electron density in the following compounds:
(d)
2
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Textbook Question
Draw the important resonance forms of the following cations and anions:
(c)
(d)
1
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Textbook Question
Use resonance structures to identify the areas of high and low electron density in the following compounds:
(c)
2
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