Sum of denticity of following ligands are
Glycinaty ion, Oxalate ion, o-phenathroline, 2,2-bipyridyl, diethylenetriamine, ethylenediamine

Answer

To find the sum of the denticity of the given ligands, we will analyze each ligand one by one, determine their denticity, and then sum them up.

### Step-by-Step Solution:

1. **Glycinate Ion**:
- Structure: CH2NH2COO⁻
- Denticity: The glycinate ion can donate electrons through one nitrogen atom and one oxygen atom.
- **Denticity = 2**

2. **Oxalate Ion**:
- Structure: COO⁻ - COO⁻
- Denticity: The oxalate ion can donate electrons through two oxygen atoms.
- **Denticity = 2**

3. **o-Phenanthroline**:
- Structure: Contains two nitrogen atoms in a fused ring system.
- Denticity: It can donate electrons through both nitrogen atoms.
- **Denticity = 2**

4. **2,2-Bipyridyl**:
- Structure: Two pyridine rings connected by a single bond, each containing a nitrogen atom.
- Denticity: It can donate electrons through both nitrogen atoms.
- **Denticity = 2**

5. **Diethylenetriamine**:
- Structure: NH2CH2CH2NHCH2CH2NH2
- Denticity: It has three nitrogen atoms available for donation.
- **Denticity = 3**

6. **Ethylene Diamine**:
- Structure: NH2CH2CH2NH2
- Denticity: It can donate electrons through two nitrogen atoms.
- **Denticity = 2**

### Summing the Denticities:
- Glycinate Ion: 2
- Oxalate Ion: 2
- o-Phenanthroline: 2
- 2,2-Bipyridyl: 2
- Diethylenetriamine: 3
- Ethylene Diamine: 2

**Total Denticity = 2 + 2 + 2 + 2 + 3 + 2 = 13**

### Final Answer:
The sum of the denticity of the given ligands is **13**.

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