Abstract
A series of PdN 4 core complexes has been synthesised. Reaction of [PdCl 2(CH 3CN) 2] with N-alkylaminopyrazole ( NN′) ligands, 1-[2-(ethylamino)ethyl]-3,5-dimethylpyrazole ( deae), 1-[2-( i propylamino)ethyl]-3,5-dimethylpyrazole ( deai), and 1-[2-( t butylamino)ethyl]-3,5-dimethylpyrazole ( deat) in the presence of AgBF 4 led to [Pd( NN′) 2](BF 4) 2. These palladium(II) compounds were characterised by elemental analyses, conductivity measurements, IR, 1H and 13C{ 1H} NMR spectroscopies. The NMR studies of the complexes prove the rigid conformation of the ligands when they are complexed. The X-ray analyses of one representative complex, [Pd( deat) 2](BF 4) 2, is reported. The crystal structure consists of discrete centrosymmetric cations involving a coordinated Pd(N pz) 2(N amino) 2 core with planar geometry and BF 4 - anions.
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