What is a Triphenylphosphine (PPh₃)?

Triphenylphosphine (PPh₃) is an organophosphorus compound with the formula P(C₆H₅)₃, consisting of a phosphorus atom bonded to three phenyl groups. It is a white to colorless crystalline solid that is relatively stable in air but can be oxidized at elevated temperatures. Triphenylphosphine plays a crucial role in organic synthesis and catalytic reactions, especially in the Wittig reaction and Stille coupling. It is also widely used as a ligand in coordination chemistry, where it binds to transition metals to modulate reactivity and selectivity. Due to its nucleophilic and reducing properties, it is employed in various laboratory and industrial-scale processes. Despite its usefulness, it should be handled with care, as its dust can cause health issues upon inhalation or skin contact. Proper protective equipment is recommended during handling in the lab or production environment.

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