Which of the following is an organometallic compound

Options

A. cis-platin
B. Zeise salt
C. Tollen's reagent
D. Sodium nitroprusside

Answer

To determine which of the given compounds is an organometallic compound, we need to follow these steps:

### Step 1: Understand the Definition of Organometallic Compounds
Organometallic compounds are defined as compounds that contain at least one metal-carbon bond. This means that there must be a direct bond between a metal atom and a carbon atom.

**Hint:** Look for compounds that explicitly show a bond between a metal and a carbon atom.

### Step 2: Analyze Each Option
We will examine each option provided in the question to see if it contains a metal-carbon bond.

1. **Cis-Platin (cis-diamminedichloroplatinum(II))**
- Structure: It consists of platinum (Pt) bonded to two ammonia (NH3) molecules and two chloride (Cl) ions.
- Conclusion: There is no metal-carbon bond present in this compound.

**Hint:** Check the structure for any carbon atoms directly bonded to the metal.

2. **Z-Salt (K2[PtCl4]·C2H4)**
- Structure: This compound has a platinum (Pt) atom bonded to four chloride ions and is associated with ethylene (C2H4).
- Conclusion: The ethylene (C2H4) has carbon atoms, and there is a metal-carbon bond present with platinum.

**Hint:** Look for the presence of carbon atoms that are directly bonded to the metal.

3. **Tollens' Reagent (Ammonical Silver Nitrate)**
- Structure: It consists of silver (Ag) ions in an ammonia solution, typically represented as Ag(NH3)2+.
- Conclusion: There are no carbon atoms in this compound, hence no metal-carbon bond.

**Hint:** Identify if there are any carbon atoms in the structure.

4. **Sodium Nitroprusside (Na2[Fe(CN)5NO])**
- Structure: This compound contains iron (Fe) bonded to cyanide (CN) groups.
- Conclusion: While it contains carbon, the bond is between iron and the cyanide group, not a direct metal-carbon bond.

**Hint:** Ensure the carbon is directly bonded to the metal, not part of a larger group.

### Step 3: Identify the Correct Answer
After analyzing all options, the only compound that contains a metal-carbon bond is **Z-Salt (K2[PtCl4]·C2H4)**.

### Final Answer
The correct answer is **Z-Salt**.

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