The preparation of a number of complex compounds of zero-valent palladium with phosphorus donors is described. They can be prepared from Pd(R.NC), and donor, or by reduction of palladium(I1) compounds in the presence of excess of donor.Three types of complexes have been isolated : (R*NC)(L),Pd, PdL,, and PdL, (L = triarylphosphines and triaryl phosphites). The compounds PdL, are largely dissociated in solution.The triphenylarsine complex (Ph,As),Pd has also been obtained.
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