Binuclear pyrazolato-bridged platinum(II) complexes: synthesis, characterization and crystal structure
摘要:
Binuclear pyrazolato-bridged platinum(II) complexes of the type [Pt2Cl2(mu-L-L)2(PR3)2] [L-L = pz (pyrazolate) or dmpz (3,5-dimethylpyrazolate); PR3 = PEt3, PMe2Ph or PMePh2] have been prepared by the reaction of [Pt2Cl2(mu-O2CMe)2(PR3)2] with Hpz or Hdmpz. All the complexes were characterized by elemental analysis and H-1 and P-31 NMR data. A single-crystal structure analysis of a representative complex, [Pt2Cl2(mu-dmpz)2(PMePh2)2], is also reported. Crystals are orthorhombic, with space group Pbca and unit-cell dimensions a = 17.701 (9), b = 24.906(8), c = 16.976(7) angstrom. The structure was refined to final R = 0.040 for 3857 reflections with / greater-than-or-equal-to 3.0sigma(/).