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Tetrakis(triphenylphosphine)palladium(0)
Tetrakis(triphenylphosphine)palladium(0) is the
chemical compound Pd[P(C
6H
5)
3]
4, often abbreviated
Pd(
PPh3)
4, or even PdP
4. It is a bright yellow
crystalline solid that becomes brown upon decomposition in air.