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 `(C Cl_(3))_(3)C Cl`, we can follow these steps:

### Step 1: Identify the Structure
The structure consists of a central carbon atom bonded to three trichloromethyl groups `(CCl3)` and one chlorine atom `(Cl)`.

### Step 2: Determine the Longest Carbon Chain
The longest carbon chain in this compound is a three-carbon chain (propane) because the central carbon is connected to three other carbon atoms from the trichloromethyl groups.

### Step 3: Identify the Substituents
We have:
- Three `CCl3` groups attached to the central carbon.
- One `Cl` atom attached to the central carbon.

### Step 4: Number the Carbon Chain
We can number the carbon chain starting from the end nearest to the substituents:
- The central carbon (C) is considered as carbon 1.
- The three `CCl3` groups are at positions 1, 2, and 3.

### Step 5: Name the Substituents
- At carbon 1, we have three chloro groups, which can be denoted as `1,1,1-trichloro`.
- At carbon 2, we have one chloro group, which can be denoted as `2-chloro`.
- The total number of chloro substituents is 7, hence we use the prefix `hepta`.

### Step 6: Combine the Names
The complete IUPAC name can be constructed as follows:
- Start with the substituents: `1,1,1-trichloro` and `2-chloro`.
- Follow with the name of the longest carbon chain: `propane`.

### Final IUPAC Name
The final IUPAC name of the compound is **2-trichloro-1,1,1-heptachloropropane**.

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