1, 3-bis (diphenylphosphine) propane (dppp) is a diphosphine ligand in coordination chemistry.

Diphosphine can be prepared by reacting lithium diphenylphosphine with 1, 3-dichloropropane:

2 Ph2PLi + C3H6Cl2 → Ph2PC3H6PPh2 + 2 LiCl

Diphosphine is a prerequisite for the complex dichloride (1, 3-bis (diphenylphosphine) propane) nickel, which is prepared by mixing an equivalent ligand with nickel dichloride hexahydrate. The nickel complex can be used as catalyst for Kumada coupling reaction.

dppp is also used to complex palladium divalent catalysts to copolymerize carbon monoxide with ethylene to obtain polyketones.

Product name: 1, 3-BIS (diphenylphosphino)propane

CAS number: 6737-42-4

Molecular formula: C27H26P2

Molecular weight: 412.44300

Accurate mass: 412.15100

PSA: 27.18000

LOGP: 5.64230

Appearance and properties: gray crystal powder

Boiling point: 529.7oC at 760 mmHg

Melting point: 63-65 °C(lit.)

Flash point: 235°C

Water solubility: insoluble

Stability: Thermal decomposition may produce toxic fumes of phosphorous oxides and/or phosphine.

Store in a cool, dry place. Store in a tightly closed container.