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

Dichloro[1,2-bis(diphenylphosphino)ethane]nickel
Identifiers
CAS Number	14647-23-5;
ECHA InfoCard	100.157.667
PubChem CID	2734542;
CompTox Dashboard (EPA)	DTXSID60432121 ;
Properties
Chemical formula	C26H24Cl2NiP2
Molar mass	528.02 g·mol−1
Appearance	orange solid
Density	1.406 g/cm3
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

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

References

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