(S)-2-Chlorobutane (CH₃CHClCH₂CH₃) - R or S Configuration
Is (S)-2-Chlorobutane R or S?
(S)-2-Chlorobutane (CH₃CHClCH₂CH₃) has 1 chiral center. Similar to 2-bromobutane but with chlorine. Good for comparing halogen priorities and practicing chain comparison.. The configuration is S based on CIP priority rules.
| Formula | CH₃CHClCH₂CH₃ |
| Name | (S)-2-Chlorobutane |
| Number of Chiral Centers | 1 |
| Configuration(s) | S |
| Difficulty | Beginner |
Chiral Center Analysis
(S)-2-Chlorobutane (CH₃CHClCH₂CH₃) contains 1 chiral center. Similar to 2-bromobutane but with chlorine. Good for comparing halogen priorities and practicing chain comparison.. Each chiral center is analyzed below using CIP (Cahn-Ingold-Prelog) priority rules to determine R or S configuration.
CIP Priority Assignment
The four substituents on the chiral center are ranked by atomic number of the directly attached atom, with ties broken by exploring outward along each branch.
- Priority 1: Cl - Highest atomic number (17)
- Priority 2: -CH₂CH₃ (ethyl) - C with C,H,H at second atom (longer chain)
- Priority 3: -CH₃ (methyl) - C with H,H,H (shorter chain)
- Priority 4: H - Lowest atomic number (1)
R/S Configuration
With the lowest priority group (priority 4) oriented away from the viewer, the remaining three substituents trace a counterclockwise path from priority 1 to 2 to 3. This gives the S configuration.
Interactive stereochemistry explorer with guided walkthroughs and practice quizzes.
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