1,3-Bis(diphenyphosphino)propane is a diphosphine generally begin as a ligand in allocation chemistry.
The diphosphine can be able by the acknowledgment of lithium diphenylphosphide and 1,3-dichloropropane.
2 Ph2PLi + C3H6Cl2 → Ph2PC3H6PPh2 + 2 LiCl
The diphosphine is a forerunner to the circuitous dichloro(1,3-bis(diphenylphosphino)propane)nickel, which is able by accumulation equimolar portions of the ligand and nickel(II) chloride hexahydrate. This nickel circuitous serves as a agitator for the Kumada coupling reaction.Dppp is aswell acclimated as a ligand for palladium(II) catalysts to co-polymerize carbon monoxide and ethylene to accord polyketones.Single-crystal X-ray diffraction studies accept been agitated out on three apparent (dppp)Pt(II)(alditolate) complexes acquired from reactions of the amoroso alcohols glycerol, erythritol, and galactitol with (dppp)Pt(CO3). The alditols bind to the platinum via adjacent, deprotonated hydroxyl groups to anatomy a 2,5-dioxaplatinacyclopentane ring arrangement accepting hydroxyalkyl substituent side-chains. The hydroxyl groups in these side-chains all appoint in either intra- or intermolecular hydrogen bonds, the above preferentially involving hydrogen band donation from a hydroxyl accumulation on the β-carbon of the metallacycle dihydroxyethyl or trihydroxypropyl substituent to either the abreast or far metallacycle oxygen atoms to accord a six- or seven-membered hydrogen-bonded ring system, respectively. Five-membered hydrogen-bonded ring systems to the adjoining metallacycle oxygen are empiric for hydroxymethyl side-chains. These hydrogen-bonded interactions are believed to play a cogent role in the complexation regioselectivity empiric in these alditolate complexes. Conformations of the 2,5-dioxaplatinacyclopentane ring and dppp chelate ring are aswell discussed, as are comparisons with added alditolate and diolate structural determinations.
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