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

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

Names
Systematic IUPAC name Dichloro[1,3-propanediylbis(diphenylphosphanuide-kappaP)]nickel
Other names 1,3-bis(diphenylphosphino)propanenickel(II) chloride
Identifiers
CAS Number	15629-92-2 Y
3D model (JSmol)	Interactive image
ChemSpider	21241481 N
ECHA InfoCard	100.132.628
InChI InChI=1S/C27H26P2.2ClH.Ni/c1-5-14-24(15-6-1)28(25-16-7-2-8-17-25)22-13-23-29(26-18-9-3-10-19-26)27-20-11-4-12-21-27;;;/h1-12,14-21H,13,22-23H2;2*1H;
SMILES Cl[Ni]3(Cl)P(CCCP3(c1ccccc1)c2ccccc2)(c4ccccc4)c5ccccc5
Properties
Chemical formula	C27H26Cl2NiP2
Molar mass	542.05 g·mol−1
Appearance	Orange to red-orange powder
Melting point	213 °C (415 °F; 486 K)
Solubility in water	immiscible in water
Hazards
Safety data sheet
R-phrases (outdated)	R49 R36/37/38 R42/43
S-phrases (outdated)	S53 R26 S36/37/39 S45
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

Dichloro[1,3-bis(diphenylphosphino)propane]nickel a coordination complex with the formula NiCl₂(dppp); where dppp is the diphosphine 1,3-bis(diphenylphosphino)propane. It is used as a catalyst in organic synthesis. The compound is a bright orange-red crystalline powder.

Structure and properties

The compound has idealized C_2v symmetry, ignoring orientation of the phenyl groups. The Nickel has square planar geometry. The compound is soluble in non-polar organic solvents and is diamagnetic.

Preparation

NiCl₂(dppp) is prepared by combining equal molar portions of nickel(II) chloride hexahydrate with 1,3-bis(diphenylphosphino)propane in 2-propanol.^[1]

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

Reactions

NiCl₂(dppp) in an effective catalyst for coupling reactions such as the Kumada coupling^[1] and Suzuki reactions (example below).^[2] It also catalyzes other reactions that convert enol ethers, dithioacetals, and vinyl sulfides to olefins.^[3][4]

References