1,1-Bis(diphenylphosphino)methane

• Dppm
• Methylenebis ( diphenylphosphine)

White crystalline powder

Fixed

118-119 ° C

Attention

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Bis (diphenylphosphino ) methane is an organic compound from the group of phosphanes. It is used as a ligand for catalytically active complexes.

Representation

Dppm can be obtained by the reaction of diphenylphosphine with dichloromethane in the presence of a base. The base case is a solution of potassium hydroxide and potassium carbonate.

Dppm alternatively may be represented by the reaction of triphenylphosphine with less reactive lithium and dichloromethane.

A further possibility is the reaction of metallic lithium with chlorodiphenylphosphine and dichloromethane.

Use

Dppm is a common phosphine ligand in homogeneous transition metal catalysis. It functions in the control as a bidentate chelating ligand, where it coordinates of its two phosphorus atoms of the central atom.