Synthesis and characterization of N,N'-diarylformamidido complexes of palladium(II)

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Abstract

Trans-Pd(PPh3)2Cl2 reacts with Li(p-RC6H4N

NC6H4R-p) (R = CH3O, CH3, H and Cl) in THF yielding the deeply colored complexes Pd(PPh3)2 (p-RC6H4NCH=NC6H4R-p)Cl (I), stable in the solid state. The main decomposition products in EtOH were identified when R = CH3, as trans-Pd(PPh3)2Cl2 and [Pd(p-CH3C6H4N
NC6H4CH3-p)2]2(II). Dimeric complexes of type (II) can be synthesized also by reacting Li(p-CH3C6H4N
NC6H4CH3-p) with Pd(NCCH3)2Cl2 in THF.

The structures of all the new complexes are proposed on the basis of u. v., i.r. and n.m.r. data.

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