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Appearance Orange to red-orange powder | ||
Dichloro[1,3-bis(diphenylphosphino)propane]nickel a coordination complex with the formula NiCl2(dppp); where dppp is the diphosphine 1,3-bis(diphenylphosphino)propane. It is used as a catalyst in organic synthesis. The compound is a bright orange-red crystalline powder.
Contents
Structure and properties
The compound has idealized C2v symmetry, ignoring orientation of the phenyl groups. The Nickel has square planar geometry. The compound is soluble in non-polar organic solvents and is diamagnetic.
Preparation
NiCl2(dppp) is prepared by combining equal molar portions of nickel(II) chloride hexahydrate with 1,3-bis(diphenylphosphino)propane in 2-propanol.
Ni(H2O)6Cl2 + dppp → NiCl2(dppp) + 6 H2OReactions
NiCl2(dppp) in an effective catalyst for coupling reactions such as the Kumada coupling and Suzuki reactions (example below). It also catalyzes other reactions that convert enol ethers, dithioacetals, and vinyl sulfides to olefins.