Textbook Question
Which of the following compounds are heterocyclic nitrogen compounds?
a.
b.
c.
d.
Ch.16 Amines
McMurry8th EditionFundamentals of General, Organic, and Biological ChemistryISBN: 9780134015187
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Table of contents
- Ch.1 Matter and Measurements27
- Ch.2 Atoms and the Periodic Table20
- Ch.3 Ionic Compounds8
- Ch.4 Molecular Compounds23
- Ch.5 Classification & Balancing of Chemical Reactions12
- Ch.6 Chemical Reactions: Mole and Mass Relationships28
- Ch.7 Chemical Reactions: Energy, Rate and Equilibrium64
- Ch.8 Gases, Liquids and Solids24
- Ch.9 Solutions52
- Ch.10 Acids and Bases25
- Ch.11 Nuclear Chemistry22
- Ch.12 Introduction to Organic Chemistry: Alkanes57
- Ch.13 Alkenes, Alkynes, and Aromatic Compounds47
- Ch.14 Some Compounds with Oxygen, Sulfur, or a Halogen50
- Ch.15 Aldehydes and Ketones45
- Ch.16 Amines42
- Ch.17 Carboxylic Acids and Their Derivatives57
- Ch.18 Amino Acids and Proteins82
- Ch.19 Enzymes and Vitamins63
- Ch.20 Carbohydrates44
- Ch.21 The Generation of Biochemical Energy65
- Ch.22 Carbohydrate Metabolism45
- Ch.23 Lipids42
- Ch.24 Lipid Metabolism33
- Ch.25 Protein and Amino Acid Metabolism24
- Ch.26 Nucleic Acids and Protein Synthesis45
McMurry8th EditionFundamentals of General, Organic, and Biological ChemistryISBN: 9780134015187Not the one you use?Change textbook
Chapter 16, Problem 9
Provide compounds that fit the following descriptions:
a. Two amines that are gases at room temperature
b. A heterocyclic amine
c. A compound with an amine group on an aromatic ring
Verified step by step guidance1
To identify two amines that are gases at room temperature, consider the molecular weight and structure of the amines. Amines with low molecular weights (e.g., methylamine and ethylamine) are typically gases at room temperature due to their small size and relatively weak intermolecular forces.
For a heterocyclic amine, look for a compound where the nitrogen atom is part of a ring structure. A common example is pyridine, which has a six-membered ring with one nitrogen atom.
To find a compound with an amine group on an aromatic ring, consider aromatic compounds like benzene that have an amine group (-NH2) attached directly to the ring. Aniline is a classic example of such a compound.
Review the physical properties and structures of the compounds identified to ensure they meet the criteria specified in the problem (e.g., state of matter, presence of a heterocyclic structure, or aromaticity).
If needed, consult a periodic table or molecular property database to confirm the boiling points, molecular weights, and structural features of the compounds to verify their suitability for the descriptions provided.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Amines
Amines are organic compounds derived from ammonia (NH3) by replacing one or more hydrogen atoms with alkyl or aryl groups. They can be classified as primary, secondary, or tertiary based on the number of carbon-containing groups attached to the nitrogen atom. Amines can exhibit varying physical properties, including volatility, which affects whether they are gases at room temperature.
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Amine Classification Example 1
Heterocyclic Compounds
Heterocyclic compounds are cyclic structures that contain at least one atom in the ring that is not carbon, commonly nitrogen, oxygen, or sulfur. These compounds can exhibit unique chemical properties and reactivities due to the presence of heteroatoms. Heterocyclic amines specifically contain nitrogen in the ring and are important in various biological and pharmaceutical applications.
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Aromatic Compounds
Aromatic compounds are characterized by the presence of one or more benzene rings, which provide stability through resonance. An amine group attached to an aromatic ring forms an aromatic amine, which can influence the compound's reactivity and solubility. These compounds are significant in organic chemistry and are often found in dyes, drugs, and other industrial chemicals.
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Related Practice
Textbook Question
Draw the structures of (a) ethylamine and (b) trimethylamine. Use dashed lines to show how they would form hydrogen bonds to water molecules.
Textbook Question
Draw the condensed and line formula of the molecule in the margin. Is it a primary, secondary, or tertiary amine? Why?
Textbook Question
Complete the following equations:
a.
Textbook Question
Write an equation for the acid-base equilibrium of:
a.Pyrrolidine and water
Label each species in the equilibrium as either an acid or a base.
Textbook Question
Arrange the following compounds in order of increasing boiling point. Explain why you placed them in that order.
a.