trietyylifosfiinioksidi

Trietyylifosfiinioksidi, also known as triethylphosphine oxide (TEPO), is an organophosphorus compound with the chemical formula (C2H5)3PO. It is a white crystalline solid at room temperature. TEPO is characterized by the presence of a phosphorus atom double-bonded to an oxygen atom and single-bonded to three ethyl groups.

This compound is typically synthesized through the oxidation of triethylphosphine. It is soluble in many organic solvents and also shows some solubility in water. TEPO is a stable compound and is not particularly reactive under normal conditions. Its polarity arises from the P=O bond, which influences its physical and chemical properties.

Trietyylifosfiinioksidi finds applications as a ligand in coordination chemistry, forming complexes with various metal ions. It can also be used as a solvent or co-solvent in certain chemical reactions due to its polarity and ability to solvate polar and nonpolar substances. In some research contexts, it has been investigated for its potential as an extractant for metal ions. The compound is generally considered to have low toxicity, though standard laboratory precautions should be observed when handling it.