The crown-guest complex is called an inclusion compound. The crown ether allows the inorganic salt to dissolve in non-polar solvents. `KMnO_(4)` forms a complex with crown ether. In this complex, the host is…. and the guest is…… .

Options

A. `K^(o+)` and crown ether
B. Crown ether and `K^(o+)`
C. `MnO_(4)^(-)` and crown ether
D. Crown ether and `MnO_(4)^(-)`

Explanation

To solve the question regarding the crown-guest complex formed by KMnO4 and crown ether, we need to identify the host and guest components of the complex. Here’s the step-by-step solution:

### Step 1: Understand the Components
Crown ethers are cyclic compounds that contain multiple ether groups (-O-) in their structure. They can encapsulate cations (positively charged ions) due to the presence of electron-donating oxygen atoms.

**Hint:** Recall the structure of crown ethers and their ability to interact with cations.

### Step 2: Identify the Complex Formation
When KMnO4 (potassium permanganate) interacts with crown ether, the crown ether can solvate the potassium ion (K+). The oxygen atoms in the crown ether can coordinate with the potassium ion due to their electron-rich nature.

**Hint:** Focus on the charge interactions; the crown ether's oxygen atoms are negatively charged and can attract the positively charged potassium ion.

### Step 3: Define Host and Guest
In the context of supramolecular chemistry:
- The **host** is the molecule that provides a cavity or environment for another molecule or ion to fit into.
- The **guest** is the molecule or ion that is encapsulated or included within the host.

In this case:
- The **host** is the crown ether because it forms a cavity that can accommodate the guest.
- The **guest** is the potassium ion (K+) from KMnO4, which is being encapsulated by the crown ether.

**Hint:** Remember that the host is typically larger and provides a space for the smaller guest.

### Final Answer
- **Host:** Crown ether
- **Guest:** Potassium ion (K+)

### Summary
In the complex formed by KMnO4 and crown ether, the crown ether acts as the host, while the potassium ion (K+) serves as the guest. This interaction allows the inorganic salt to dissolve in non-polar solvents, demonstrating the unique properties of crown ethers in supramolecular chemistry.