Chemistry
Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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What is the relationship between the two pairs ? Diastromers, enantiomers, geometric isomers?

The image shows two pairs of molecular structures, each illustrating different conformations of brominated alkanes.

**First Pair:**
- The first structure shows a bromine (Br) atom attached to a chiral center of an alkane, with the Br atom depicted using a solid wedge. This indicates the Br is coming out of the plane towards the viewer.
- The second structure has the Br atom attached to a similar chiral center, but it is represented with a dashed wedge, indicating the Br is going behind the plane, away from the viewer.
- The "and" between them signifies these are enantiomers, mirror-image isomers of each other.

**Second Pair:**
- The third structure shows a bromine (Br) atom on an ethane-like backbone with the Br on a solid wedge, indicating it is coming out of the plane towards the viewer.
- The fourth structure again shows a similar atom and structure, with an identical geometric placement of the Br.
- The "and" between these indicates these are conformational isomers, likely showing different rotations around a single bond.

These diagrams are useful in chemistry for understanding stereochemistry and the 3D arrangement of atoms in molecules.
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Transcribed Image Text:The image shows two pairs of molecular structures, each illustrating different conformations of brominated alkanes. **First Pair:** - The first structure shows a bromine (Br) atom attached to a chiral center of an alkane, with the Br atom depicted using a solid wedge. This indicates the Br is coming out of the plane towards the viewer. - The second structure has the Br atom attached to a similar chiral center, but it is represented with a dashed wedge, indicating the Br is going behind the plane, away from the viewer. - The "and" between them signifies these are enantiomers, mirror-image isomers of each other. **Second Pair:** - The third structure shows a bromine (Br) atom on an ethane-like backbone with the Br on a solid wedge, indicating it is coming out of the plane towards the viewer. - The fourth structure again shows a similar atom and structure, with an identical geometric placement of the Br. - The "and" between these indicates these are conformational isomers, likely showing different rotations around a single bond. These diagrams are useful in chemistry for understanding stereochemistry and the 3D arrangement of atoms in molecules.
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