关键词: ¹⁹⁵Pt, ³¹P-NMR谱, 含磷配体铂(Ⅱ)络合物

Abstract: The ¹⁹⁵Pt, ³¹P-NMR spectra were recorded for 12 platinum(Ⅱ) complexes containing phenyl cyclopentyl phosphine, phosphite and halogen ligands The influence of solvent,concentration and temperature on the ¹⁹⁵Pt spectra were investigated Lewis base solvents cause ¹⁹⁵Pt resonances moving upfield. For cis-Pt(PPh₃)₂Cl₂ in CH₂Cl₂ solution, ¹⁹⁵Pt concentration coefficient is -17.8ppm/mol, and temperature coefficient is 0. 43ppm/℃. It was found that the ¹⁹⁵Pt, ³¹P chemical shifts of cis-isomers are less than those of trans-isomers, δ_cis < δ_trans, and coupling constants of cis-isomers are greater than those of trans-isomers, (¹Jp_t-P)_cis > (¹Jp_t-p)_trans. Normal halogen dependence was observed for the complexes cis-Pt(PPh₃)₂X₂, the order of δ(¹⁹⁵Pt), δ(³¹P), 1Jpt-p values is Cl > Br > I. In 1, 2-diaminopropane solution the ¹⁹⁵Pt satellite of ³¹P spectrum is the AB part of ABX system, whereas the central peak appears as a singlet.The ₁₉₅Pt, ³¹P spectra of phosphite platinum complexes were also discussed.

Key words: ¹⁹⁵Pt, ³¹P-NMR Spectra, Phosphorus Containing Platinum(Ⅱ) Complexes