Synthesis of New Pd~II Complexes Containing a Thioether-Pyrazole Hemilabile Ligand-Structural Analysis by ~1H,~13C NMR Spectroscopy and Crystal Structure of [PbCl(bdtp)]BF_4[bdtp=1,5-Bis(3,5-dimethyl-1-pyrazolyl)-3-thiapentane]

摘要

Treatment of the ligand 1,5-bis(3,5-dimethyl-1-pyrazolyl)-3-thiapentane(bdtp)with[PdCl_2(CH_3CN)_2led to a [PdCl_2(bdtp)]complex.Subsequent treatment of this complex with AgBF_4 gave[PdCl(dbtp)](BF_4).These Pd~II complexes were characterised by elemental analysis,conductivity measurements,IR spectroscopy,and ~1H and ~13C NMR spectroscopy.Complex [PdCl_2(bdtp)]was again botained when the complex[PdCl(bdtp)](BF_4)was heated under reflux in a solution of NEt_4Cl in CH_2Cl_2/MeOH(1:1),Ligand bdtp in complexes 1 and 2 exhibited a hemilabile character.The X-ray structure of the complex[PdCl(bdep)](BF_4)was determined.The metal atom is tricoordinated by the two azine nitrogen atoms and one thioether sulfur atom of the thiplanar)being completed with one chloride ion.