The chemical formula of Zeigler-Natta catalyst is

Options

A. `CuCl_(2)`
B. `NiCl_(2)`
C. `CrCl_(3)`
D. `TiCl_(4)`

Answer

To determine the chemical formula of the Ziegler-Natta catalyst, we can follow these steps:

### Step 1: Understand the Components of the Ziegler-Natta Catalyst
The Ziegler-Natta catalyst is primarily composed of two main components: a transition metal compound (usually titanium) and an organoaluminum compound.

### Step 2: Identify the Common Compounds Used
The most common titanium compounds used in the Ziegler-Natta catalyst are:
- Titanium(III) chloride (TiCl3)
- Titanium(IV) chloride (TiCl4)

The organoaluminum compound often used is:
- Triethylaluminum (Al(C2H5)3)

### Step 3: Write the Chemical Formulas
From the information provided, we can write the chemical formulas for the two common combinations:
1. TiCl3 + Al(C2H5)3
2. TiCl4 + Al(C2H5)3

### Step 4: Determine the Most Commonly Used Formula
While both combinations are used, the most commonly referenced Ziegler-Natta catalyst is based on titanium(IV) chloride, which is TiCl4, combined with triethylaluminum.

### Final Answer
Thus, the chemical formula of the Ziegler-Natta catalyst is **TiCl4**.

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