Dichloro(1,2-bis(diphenylphosphino)ethane)nickel explained

Dichloro[1,2-bis(diphenylphosphino)ethane]nickel is a coordination complex with the formula NiCl₂(dppe); where dppe is the diphosphine 1,2-bis(diphenylphosphino)ethane. It is used as a reagent and as a catalyst.^[1] The compound is a bright orange-red diamagnetic solid. The complex adopts a square planar geometry.^{[2] [3]}

It is prepared by combining equimolar portions of nickel(II) chloride hexahydrate with dppe:

Ni(H₂O)₆Cl₂ + dppe → NiCl₂(dppe) + 6 H₂O

See also

• Dichloro(1,3-bis(diphenylphosphino)propane)nickel

Notes and References

1. Kumada. Makota. Tamao. Kohei. Sumitani. Koji . Phosphine-Nickel Complex Catalyzed Cross-Coupling of Grignard Reagents with Aryl and Alkenyl Halides: 1,2-Dibutylbenzene . Organic Syntheses . 58 . 127 . 1978 . 10.15227/orgsyn.058.0127.
2. Van Hecke . Gerald R. . Horrocks, Jr. . William DeW. . Ditertiary Phosphine Complexes of Nickel. Spectral, Magnetic, and Proton Resonance Studies. A Planar-Tetrahedral Equilibrium . Inorganic Chemistry . 1966 . 5 . 11 . 1968–1974 . 10.1021/ic50045a029.
3. J. C.. Davison. M. R. St.-J.. Foreman. R. A.. Howie. M.J.. Plater. J. M. S.. Skakle. Acta Crystallogr. C. 57. 690. 10.1107/S0108270101003961. A New Polymorph, Form C, of [1,2-Bis(diphenylphosphino)ethane]dichloronickel(II). 2001 . 6 .