Select the correct `IUPAC` name for
`[Ti (pi - C_(5)H_(5))_(2)(O -C_(5)H_(5))_(2)]` .

Answer

To determine the correct IUPAC name for the complex \([Ti (π - C_{5}H_{5})_{2}(O - C_{5}H_{5})_{2}]\), we can follow these steps:

### Step 1: Identify the ligands
The complex contains:
- Two cyclopentadienyl (C5H5) ligands that are bonded via π (pi) bonds.
- Two alkoxide (O-C5H5) ligands that are bonded via sigma (σ) bonds.

### Step 2: Determine the hapticity of the ligands
The cyclopentadienyl ligands are bonded in an η^5 (eta 5) manner, which means they are acting as pentadentate ligands. This is indicated by the notation "η^5" in the name.

### Step 3: Count the number of each type of ligand
- There are two cyclopentadienyl ligands, so we will use "bis" to indicate two of them.
- There are also two alkoxide ligands.

### Step 4: Construct the name
The IUPAC name is constructed by listing the ligands in alphabetical order, followed by the metal and its oxidation state.

1. The cyclopentadienyl ligands will be named as "bis(η^5-cyclopentadienyl)".
2. The alkoxide ligands will be named as "bis(alkoxide)" or "bis(cyclopentyl oxide)".
3. The metal is titanium (Ti).

### Step 5: Determine the oxidation state of titanium
In this complex, titanium is in its +4 oxidation state.

### Final IUPAC Name
Putting it all together, the correct IUPAC name for the complex is:
**bis(η^5-cyclopentadienyl)bis(cyclopentyl oxide)titanium(IV)**