and Br Br and F D and .D F OH ICH3 and "CH3 HO. י וווום I

Chemistry
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Chapter1: Chemical Foundations
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Identify each pair of structures below as enantiomers (E), diasteromers (D), or conformers (C).

This image shows four pairs of chemical structures. Each pair consists of two molecules, which are compared side by side. Let's describe each pair in detail:

1. **First Pair**:
   - Both molecules have a cyclohexanone structure (a six-membered carbon ring with a ketone group).
   - One molecule has two hydrogen atoms attached on adjacent carbons in a trans configuration (one hydrogen up, one down), while the other has the same setup.

2. **Second Pair**:
   - These molecules are cyclohexanes with three substituents: bromine (Br), fluorine (F), and chlorine (Cl).
   - The stereochemistry differs in these molecules: one has Br and F as wedges (indicating they are above the plane) and Cl as a dash (below the plane), while the other swaps the positions of the F and Cl.

3. **Third Pair**:
   - Both are bicyclic compounds featuring fluorine (F) and deuterium (D).
   - In one molecule, F is attached to a carbon above the plane, and D is below the plane, while the other molecule has the opposite configuration.

4. **Fourth Pair**:
   - These molecules are cyclobutane rings (four-membered carbon rings) with hydroxyl (OH) and methyl (CH₃) groups.
   - The first molecule has an OH group in the up position and a CH₃ in the down position, while the second has the CH₃ up and OH down, demonstrating inversion of configuration.

Each pair is accompanied by a box to the right, which may indicate a comparison or require selection, possibly for educational exercises related to stereochemistry or enantiomers.
Transcribed Image Text:This image shows four pairs of chemical structures. Each pair consists of two molecules, which are compared side by side. Let's describe each pair in detail: 1. **First Pair**: - Both molecules have a cyclohexanone structure (a six-membered carbon ring with a ketone group). - One molecule has two hydrogen atoms attached on adjacent carbons in a trans configuration (one hydrogen up, one down), while the other has the same setup. 2. **Second Pair**: - These molecules are cyclohexanes with three substituents: bromine (Br), fluorine (F), and chlorine (Cl). - The stereochemistry differs in these molecules: one has Br and F as wedges (indicating they are above the plane) and Cl as a dash (below the plane), while the other swaps the positions of the F and Cl. 3. **Third Pair**: - Both are bicyclic compounds featuring fluorine (F) and deuterium (D). - In one molecule, F is attached to a carbon above the plane, and D is below the plane, while the other molecule has the opposite configuration. 4. **Fourth Pair**: - These molecules are cyclobutane rings (four-membered carbon rings) with hydroxyl (OH) and methyl (CH₃) groups. - The first molecule has an OH group in the up position and a CH₃ in the down position, while the second has the CH₃ up and OH down, demonstrating inversion of configuration. Each pair is accompanied by a box to the right, which may indicate a comparison or require selection, possibly for educational exercises related to stereochemistry or enantiomers.
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