Palladium(II) saccharinate (sac) and thiosaccharinate (tsac) complexes with supporting amino- and acetylamino-thiazole ligands: Crystal structures of trans-[PdCl_2(abzt)_2]·dmf (abzt = 2-aminobenzothiazole), trans-[PdCl_2(bzta)_2].dmf (bzta = 2-acetylaminobenzothiazole) and trans-[Pd(sac)_2(abzt)_2]·2dmf

摘要

Treatment of Na_2PdCl_4 with two equivalents of amino- or acetylamino-thiazoles [L = 2-aminobenzothiazole (abzt), 2-aminothiazole (atz), 2-acetylaminobenzothiazole (bzta) and 2-acetylaminothiazole (tza)] or 2-aminobenzimidazole (abzim)] affords trans-[PdCl_2L_2] complexes in which the introduced ligands are coordinated to palladium through the endocyclic nitrogen as shown by X-ray crystal structures of trans-[PdCl _2(abzt)_2]·dmf and trans-[PdCl_2(bzta)_2]·dmf. Addition of two equivalents of sodium saccharinate (Nasac) yields trans-[Pd(sac)_2L_2] complexes whereby the saccharinate anions are coordinated through nitrogen as shown by the X-ray crystal structure of trans-[Pd(sac)_2(abtz)_2]·2dmf. With thiosaccharin (Htsac) trans-[Pd(tsac)_2L_2] result but now the thiosaccharinate ligands coordinate through the sulfur of the thiolate group as evidenced by spectroscopic studies.