IUPAC name of `(C Cl_(3))_(3)C Cl` is

Options

A. tris - trichloromethyl-1-chloro methane
B. 2-Chloro-2-trischloromethyl propane
C. 1,1,1,2,3,3,3-Heptachloro-2-trichloromethyl propane
D. 1,1,1-trichloromethyl-1-chloro methane

Answer

To determine the IUPAC name of the compound \( (CCl_3)_3CCl \), we can follow these steps:

### Step 1: Identify the Structure
The compound consists of a central carbon atom bonded to three \( CCl_3 \) groups and one \( Cl \) atom. This can be represented as follows:
- The central carbon (C) is bonded to three trichloromethyl groups (\( CCl_3 \)).
- There is also a chlorine atom (\( Cl \)) directly attached to the central carbon.

### Step 2: Count the Carbon Atoms
The structure has:
- 3 carbon atoms from the three \( CCl_3 \) groups.
- 1 central carbon atom.

Thus, the total number of carbon atoms is 4.

### Step 3: Determine the Parent Chain
The longest continuous chain of carbon atoms contains 4 carbon atoms. Therefore, the parent chain is a butane.

### Step 4: Identify the Substituents
The substituents on the butane chain are:
- Three \( CCl_3 \) groups (trichloromethyl groups).
- One \( Cl \) atom.

### Step 5: Number the Carbon Atoms
To give the lowest numbers to the substituents, we number the carbon atoms in the chain:
1. The central carbon (C) is numbered as 1.
2. The three \( CCl_3 \) groups are attached to carbon 1.
3. The \( Cl \) atom is also attached to carbon 1.

### Step 6: Write the IUPAC Name
Combining all the information:
- The compound has one butane chain.
- There are three \( CCl_3 \) groups and one \( Cl \) substituent.

The IUPAC name can be written as:
- 1,1,1-trichloro-2-chlorobutane.

However, since all \( CCl_3 \) groups are on the same carbon, we can simplify this to:
- 1,1,1-trichloro-2-chloropropane.

### Final Answer
The IUPAC name of \( (CCl_3)_3CCl \) is **1,1,1-trichloro-2-chloropropane**.

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