Find out correct IUPAC name of complex compound

Options

A. Triamminetricyanidochromium(III)hexanitrito-N-irridate(III)
B. Pentaamminecyanidochromium(III)hexanitrito-N-irridium(III)
C. Hexanitrito-N-irridium(III)pentaamminecyanidochromate(II)
D. Pentaamminecyanidochromium(III)hexanitrito-n-irridate(III)

Explanation

To find the correct IUPAC name of the complex compound given as [Cr(NH3)5(CN)] [Ir(NO2)6], we will follow the systematic steps outlined in the video transcript.

### Step-by-Step Solution:

1. **Identify the Ligands**:
- The ligands in the complex are ammonia (NH3) and cyanide (CN) for the cationic part, and nitrite (NO2) for the anionic part.
- Ammonia is named as "amine" and cyanide as "cyanido". For nitrite, since it donates electrons through nitrogen, it is named "nitrito".

2. **Count the Number of Each Ligand**:
- In the cationic part, there are 5 ammonia ligands and 1 cyanide ligand.
- In the anionic part, there are 6 nitrito ligands.

3. **Determine the Naming Order of Ligands**:
- The ligands are named in alphabetical order regardless of their quantity.
- Therefore, "amine" (from NH3) comes before "cyanido" (from CN), and "nitrito" (from NO2) is considered later.

4. **Name the Cationic Part**:
- The cationic part is [Cr(NH3)5(CN)].
- The name for 5 amines is "pentaamine".
- The name for 1 cyanido is just "cyanido".
- The central metal ion is chromium, which is in the +3 oxidation state, so it is named "chromium(III)".

5. **Name the Anionic Part**:
- The anionic part is [Ir(NO2)6].
- The name for 6 nitritos is "hexanitrito".
- The central metal ion is iridium, which is in the +3 oxidation state, so it is named "iridate(III)" in the anionic form.

6. **Combine the Names**:
- The full name of the complex is constructed by combining the names of the cationic and anionic parts.
- The cationic part comes first followed by the anionic part.
- Therefore, the complete IUPAC name is: **pentaamine cyanido chromium(III) hexanitrito iridate(III)**.

### Final Answer:
The correct IUPAC name of the complex compound is **pentaamine cyanido chromium(III) hexanitrito iridate(III)**.