含手性膦配体和邻巯基氧化吡啶配体的金,钯配合物的2D NMR研究

2D NMR studies of Metal(Au,Pd) Complexes Containing 2-Mercaptopyridine-1-oxide Ligands and Chiral Phosphine Ligands

对含手性膦配体甲基-3-脱氧-3－（二苯膦基）－4，6-氧-苄叉基-a-D-吡喃阿卓糖苷（3－MBPA）和甲基-2-脱氧-2－（二苯膦基）－4，6-氧-苄叉基-a－D-吡喃阿卓糖苷（2－MN-PA）及邻巯基氧化吡啶配体mpo的金配合物An[（3－MBPA）（mpo）]（1）、An[（2－MBPA）（mpo）]（2）和钯配合物Pd[（3－MBPA）（mpo）C1]（3）、Pd[（2－MBPA）（mpo）-C1]（4）进行1H和13CNMR谱测定，利用一维和二维NMR技术归属了所有的1H和13CNMR谱线，结果表明：配体MBPA与金属配伍的是P原子，糖苷上H－5的化学位移变化最大，而且与配位金属的种类有关；配体mpo以单齿形式与金属配位时，是S原子参与配位。

The 1H and 13C NMR spectra of four transition-metal compounds containing mpo and chiralphosphine ligands MBPA, Au [(3-MBPA ) (mpo) ] (1), Au [2-MBPA) (mpo)] (2), and Pd [(3-MBPA) (mpo)CD (3), Pd[(2-MBPA) (mpo)Cl] (4), have been determined. All the proton andcarbon signals were assigned definitely by means of H-H COSY, H-C HMQC NMR experiments. The results indicate that the phosphorus atom of ligand MBPA coordinates to the Au orPd atom, the lines of the proton H-5 shift to lower or up-field, which depends on metal atom.The sulfur atom of ligand mpo coordinates to metal atom Au.