Phosphine oxide, organophosphorus compounds with the formula - OPR₃. Phosphines are often air-sensitive, and are often oxidized to phosphine oxides on prolonged storage.

See also

• Triphenylphosphine oxide
• Organophosphorus
• Phosphine - PR₃
• Phosphinite - P(OR)R₂
• Phosphonite - P(OR)₂R
• Phosphite - P(OR)₃
• Phosphinate - OP(OR)R₂
• Phosphonate - OP(OR)₂R
• Phosphate - OP(OR)₃