What is "tributylphosphine"

n. (context chemistry English) A tertiary phosphine, most commonly encountered as a ligand in transition metal complexes, with some industrial applications.

Tributylphosphine is the organophosphorus compound with the formula P(CH). Abbreviated or PBu, it is a tertiary phosphine. It is an oily liquid at room temperature, with a nauseating odor. It reacts slowly with atmospheric oxygen, and rapidly with other oxidizing agents, to give the corresponding phosphine oxide. It is usually handled using air-free techniques.