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Questions and Answers
What is the defining characteristic of isomers?
What is the defining characteristic of isomers?
- Having the same molecular formula but differing in the way atoms are joined (correct)
- Having the same molecular formula and structural formula
- Having different molecular formulas but the same structural formula
- Being conformers that result from rotations about single bonds
What type of isomers have the same connectivity of atoms?
What type of isomers have the same connectivity of atoms?
- Stereoisomers (correct)
- Constitutional isomers
- Conformational isomers
- Enantiomers
What is the key difference between isomers and conformers?
What is the key difference between isomers and conformers?
- Isomers are long-lived and isolable, while conformers are not (correct)
- Isomers result from rotations about single bonds, while conformers result from bond breaking
- Isomers have different molecular formulas, while conformers have the same molecular formula
- Isomers are stereoisomers, while conformers are constitutional isomers
What is the term for isomers that are non-superimposable mirror images?
What is the term for isomers that are non-superimposable mirror images?
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What is the process required for isomerization to occur?
What is the process required for isomerization to occur?
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Study Notes
Isomerism
- Isomerism is a phenomenon where two or more compounds have the same molecular formula but differ in the way their atoms or groups are bonded together.
Characteristics of Isomers
- Isomers have the same molecular formula but different structural formulae.
- They contain the same atoms bonded together in different ways.
Types of Isomers
- Constitutional isomers: have different connectivity of atoms.
- Stereoisomers: have the same connectivity of atoms.
- Enantiomers: a type of stereoisomers.
- E and Z double bonds: a type of stereoisomers.
Properties of Isomers
- Isomers are generally long-lived and isolable.
- Isomerization requires breaking bonds.
Contrast with Conformers
- Conformers: many different spatial arrangements resulting from rotations about single bonds.
- Isomers differ from conformers in being long-lived and isolable.
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