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[13965-03-2] trans-C36H30Cl2P2Pd (MW 701.90) InChI = 1S/2C18H15P.2ClH.Pd/c2*1-4-10-16(11-5-1)19(17-12-6-2-7-13-17)18-14-8-3-9-15-18;;;/h2*1-15H;2*1H;/q;;;;+2/p-2 InChIKey = YNHIGQDRGKUECZ-UHFFFAOYSA-L Physical Data: decomposition temperature 100 °C. Solubility: insoluble in water. Form Supplied in: yellow powder. Preparative Methods: the direct reaction of PdCl2 with 2 equiv of PPh3 is relatively sluggish, as PdCl2 is insoluble in common organic solvents. However, PdCl2 reacts readily with 2 equiv of LiCl or PhCN to give Li2PdCl4 or Cl2Pd(PhCN)2, respectively, and these Pd complexes dissolve readily in various organic solvents such as THF. Addition of 2 equiv of PPh3 to these Pd complexes dissolved in an appropriate organic solvent provides a solution of Cl2Pd(PPh3)21-3 dissolved in the solvent used for its generation. Isolation of Cl2Pd(PPh3)2 as a yellow powder can be achieved by removal of LiCl, PhCN, and other solvents by usual extraction and evaporation. Handling, Storage and Precautions: Cl2Pd(PPh3)2 is considerably more stable than the corresponding Pd(0) complexes, such as Pd(PPh3)4. It is still advisable to store it with exclusion of light, air, and moisture. Under these conditions, Cl2Pd(PPh3)2 appears to be storable for many months at room temperature. This is one of the advantages of Cl2Pd(PPh3)2 over Pd(PPh3)4. |
