triphenylarsenic

Triphenylarsenic is an organoarsenic compound with the chemical formula (C6H5)3As, often written as AsPh3. It is a white crystalline solid and is air-stable. Triphenylarsine is a derivative of arsine, AsH3, where the three hydrogen atoms have been replaced by phenyl groups. It is a member of the tertiary arsines and is structurally analogous to triphenylphosphine and triphenylstibine.

Triphenylarsine is typically synthesized by the reaction of arsenic trichloride with phenylmagnesium bromide (a Grignard reagent) or phenyllithium. The compound is soluble in many organic solvents such as diethyl ether, benzene, and chloroform. It can act as a Lewis base and a ligand in coordination chemistry, forming complexes with various transition metals. These complexes are often studied for their catalytic properties.

Due to the toxicity associated with arsenic compounds, triphenylarsine should be handled with care. Skin contact and inhalation should be avoided. Its reactions and applications are primarily within academic and industrial research settings. It is not a commonly encountered substance in everyday life.