Which of the following is not an organometallic compounds ?

Options

A. Sodium ethoxide
B. Trimethoxytitanium chloride
C. trimethylorthoborate
D. All of these

Explanation

To determine which of the following compounds is not an organometallic compound, we first need to understand the definition of organometallic compounds.

### Step 1: Understand the Definition of Organometallic Compounds
Organometallic compounds are defined as compounds that contain at least one direct covalent bond between a carbon atom and a metal atom. The metal can be from various groups, including transition metals, main group metals, and some metalloids.

### Step 2: Identify the Given Compounds
Let’s assume we have a list of compounds to analyze. For example, we might have:
1. Sodium ethoxide (NaOEt)
2. Trimethyl borate (B(OCH₃)₃)
3. Titanium chloride (TiCl₄)
4. Methyl lithium (LiCH₃)

### Step 3: Analyze Each Compound
- **Sodium Ethoxide (NaOEt)**: This compound consists of sodium (a metal) and an ethoxide group (C₂H₅O⁻). There is no direct metal-carbon bond here, as the sodium is bonded to oxygen, not directly to carbon. Thus, it is not an organometallic compound.

- **Trimethyl Borate (B(OCH₃)₃)**: This compound contains boron (a metalloid) and three methoxy groups (OCH₃). The carbon in the methoxy groups is directly bonded to boron, making it an organometallic compound.

- **Titanium Chloride (TiCl₄)**: This compound contains titanium (a metal) but does not have any carbon atoms. Therefore, it cannot be classified as an organometallic compound.

- **Methyl Lithium (LiCH₃)**: This compound contains lithium (a metal) and a methyl group (CH₃). The carbon is directly bonded to lithium, making it an organometallic compound.

### Step 4: Conclusion
From the analysis, we can conclude that **Sodium Ethoxide (NaOEt)** is not an organometallic compound because it lacks a direct metal-carbon bond.

### Final Answer
The compound that is not an organometallic compound is **Sodium Ethoxide (NaOEt)**.

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