Dimethylglyoxime is coordinated to `Ni^(2+)` through .

Options

A. Two oxgen atoms
B. Two nitrogen atoms
C. Two oxygen and one nitrogen atoms
D. Two oxygen and one nitrogen atoms

Explanation

To determine how dimethylglyoxime (DMG) coordinates to nickel ions (Ni²⁺), we can follow these steps:

### Step 1: Understand the Structure of Dimethylglyoxime
Dimethylglyoxime (DMG) has the following structure:
- It has two nitrogen atoms (N) and two hydroxyl groups (OH) attached to a carbon skeleton.
- The formula can be represented as CH₃C(=NOH)C(=NOH)CH₃.

### Step 2: Identify the Donor Atoms
- Each nitrogen atom in DMG has a lone pair of electrons that can be donated to a metal ion.
- Therefore, DMG has two nitrogen atoms available for coordination.

### Step 3: Coordination to Nickel Ion
- The nickel ion (Ni²⁺) can accept electron pairs from the nitrogen atoms in DMG.
- Since DMG has two donor nitrogen atoms, it acts as a bidentate ligand.

### Step 4: Formation of the Coordination Complex
- When DMG coordinates with Ni²⁺, it forms a complex where the two nitrogen atoms from DMG bond with the nickel ion.
- The resulting complex can be represented as [Ni(DMG)₂]²⁺, indicating that two DMG molecules are coordinated to one nickel ion.

### Step 5: Conclusion
- Therefore, dimethylglyoxime coordinates to Ni²⁺ through its nitrogen atoms, making it a bidentate ligand that forms a coordination complex.

### Final Answer
Dimethylglyoxime is coordinated to Ni²⁺ through its nitrogen atoms.

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