名称:
Synthesis, structural and multinuclear natural abundance (13C, 31P, 195Pt) CP/MAS NMR studies of crystalline O,O′-dialkyldithiophosphate platinum(II) complexes
摘要:
Platinum(II) O,O'-dicyclohexyl dithiophosphate [Pt{S2P(O-cyclo-C6H11)(2)}(2)] (I) and platinum(II) O,O'-diisopropyl dithiophosphate [Pt{S2P(O-iso-C3H7)(2)}(2)] (II) complexes were obtained and studied by solidstate C-13, P-31, and Pt-195 CP/MAS NMR spectroscopy. The dithiophosphate (Dtph) ligands in molecular structure I were found to be coordinated by platinum in S,S'-bidentate fashion to form the planar chromophore [PtS4] (single-crystal X-ray diffraction data). For complex II, a new alpha-form (alpha-II) was obtained and identified by P-31 MAS NMR spectroscopy. The P-31 chemical shift anisotropy delta(aniso) and the asymmetry parameter eta of the P-31 chemical shift tensor were calculated from the whole MAS spectra.