Diphosphine ligands

Diphosphines, sometimes called bisphosphanes, are organophosphorus compounds most commonly used as bidentate phosphine ligands in inorganic and organometallic chemistry.

The short-chain diphosphine dppm tends to promote metal-metal interactions as illustrated by A-frame complexes.

When the two phosphine substituents are linked by two to four carbon centres, the resulting ligands often chelate rings with a single metal.

A common diphosphine ligand is dppe, which forms a five-membered chelate ring with most metals.

Some diphosphines, such as the extraordinary case of tBu2P(CH2)10PtBu2, give macrocyclic complexes with as many as 72 atoms in a ring.

Skeletal formula of a generic diphosphine ligand. R represents a side chain . The phosphine donors are connected by a backbone linker.

Chlorodiisopropylphosphine is a popular building block for the preparation of diphosphines.

(2-Bromophenyl)diphenylphosphine is a precursor to unsymmetrical diphosphines.

1,2-Bis(dichlorophosphino)ethane is a key intermediate in the synthesis of 1,2-bis(dimethylphosphino)ethane . ^{[

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