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1,2-Bis(dimethylphosphino)ethane

1,2-Bis(dimethylphosphino)ethane

ethylenebis(dimethylphosphine) 1,2-Bis(dimethylphosphino)ethane

1,2-Bis(dimethylphosphino)ethane (dmpe) is a diphosphine ligand in coordination chemistry. It is a colorless, air-sensitive liquid that is soluble in organic solvents. With the formula (CHPMe), dmpe is used as a compact strongly basic spectator ligand (Me = methyl), Representative complexes include V(dmpe)(BH), Mn(dmpe)(AlH), Tc(dmpe)(CO)Cl, and Ni(dmpe)Cl.

2}} (P is ochre, Co. is blue, Cl is green).<!--CSDZIGFIEtr-->

Synthesis

It is synthesised by the reaction of methylmagnesium iodide with 1,2-bis(dichlorophosphino)ethane: :ClPCHCHPCl + 4 MeMgI → MePCHCHPMe + 4 MgICl Alternatively it can be generated by alkylation of sodium dimethylphosphide.

The synthesis of dmpe from thiophosphoryl chloride has led to serious accidents and has been abandoned.

References

References

  1. {{Sigma-Aldrich. Aldrich
  2. {{Greenwood&Earnshaw2nd
  3. R. J. Burt. (1979). "A convenient synthesis of 1,2-bis(dichlorophosphino)ethane, 1,2-bis(dimethylphosphino)ethane and 1,2-bis(diethylphosphino)ethane". [[Journal of Organometallic Chemistry]].
  4. (1985). "Inorganic Syntheses".
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chelating-agents diphosphines 1,2-ethanediyl-compounds
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