4. Determine the relationship between the following pair of compounds: constitutional isomers, enantiomers, diastereomers, identical, or no relationship. CH3 OH- OH- H H H -F HKOH OH H3C HO H H Тон F

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### Determining Relationships Between Pairs of Compounds

**Question 4**:
Determine the relationship between the following pairs of compounds: constitutional isomers, enantiomers, diastereomers, identical, or no relationship.

**Explanation and Analysis**:

1. **First Pair (Top Row)**
   - **Structures**: Both are cyclobutane rings with one attached methyl group. One compound has the methyl group oriented upwards (wedge), and the other has it oriented downwards (dash).
   - **Relationship**: **Enantiomers** (non-superimposable mirror images).

2. **Second Pair (Second Row)**
   - **Structures**: Both are cyclobutane rings with one attached methyl group. The orientation of the methyl group is the same in both compounds.
   - **Relationship**: **Identical**

3. **Third Pair (Third Row)**
   - **Structures**: Both are cyclohexane rings with three substituents in the 1, 2, and 4 positions. The substituents have different orientations on each carbon (varied wedges and dashes).
   - **Relationship**: **Diastereomers** (stereoisomers that are not mirror images).

4. **Fourth Pair (Fourth Row)**
   - **Structures**: Both are simple alcohols with an OH group attached to a carbon chain. The two compounds appear to have the same connectivity but different spatial arrangements.
   - **Relationship**: **Enantiomers** (non-superimposable mirror images).

5. **Fifth Pair (Fifth Row)**
   - **Structures**: Both are bicyclic compounds. The positioning and structure of the rings differ slightly.
   - **Relationship**: **Constitutional Isomers** (different connectivity of atoms).

6. **Sixth Pair (Bottom Row)**
   - **Structures**: Both contain a central carbon with four different groups attached: CH3, OH, H, and F. However, the spatial arrangements of these groups vary.
   - **Relationship**: **Enantiomers** (non-superimposable mirror images).

By examining the structures, connectivity, and spatial arrangements of each pair of compounds, we can classify their relationships accurately. This exercise is important for understanding stereochemistry and its implications in chemical reactivity and properties.
Transcribed Image Text:### Determining Relationships Between Pairs of Compounds **Question 4**: Determine the relationship between the following pairs of compounds: constitutional isomers, enantiomers, diastereomers, identical, or no relationship. **Explanation and Analysis**: 1. **First Pair (Top Row)** - **Structures**: Both are cyclobutane rings with one attached methyl group. One compound has the methyl group oriented upwards (wedge), and the other has it oriented downwards (dash). - **Relationship**: **Enantiomers** (non-superimposable mirror images). 2. **Second Pair (Second Row)** - **Structures**: Both are cyclobutane rings with one attached methyl group. The orientation of the methyl group is the same in both compounds. - **Relationship**: **Identical** 3. **Third Pair (Third Row)** - **Structures**: Both are cyclohexane rings with three substituents in the 1, 2, and 4 positions. The substituents have different orientations on each carbon (varied wedges and dashes). - **Relationship**: **Diastereomers** (stereoisomers that are not mirror images). 4. **Fourth Pair (Fourth Row)** - **Structures**: Both are simple alcohols with an OH group attached to a carbon chain. The two compounds appear to have the same connectivity but different spatial arrangements. - **Relationship**: **Enantiomers** (non-superimposable mirror images). 5. **Fifth Pair (Fifth Row)** - **Structures**: Both are bicyclic compounds. The positioning and structure of the rings differ slightly. - **Relationship**: **Constitutional Isomers** (different connectivity of atoms). 6. **Sixth Pair (Bottom Row)** - **Structures**: Both contain a central carbon with four different groups attached: CH3, OH, H, and F. However, the spatial arrangements of these groups vary. - **Relationship**: **Enantiomers** (non-superimposable mirror images). By examining the structures, connectivity, and spatial arrangements of each pair of compounds, we can classify their relationships accurately. This exercise is important for understanding stereochemistry and its implications in chemical reactivity and properties.
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