配合物PdCl_2[(PPh_2)_2CHC1]的合成、结构及反应机理

COMPLEX Pd[(PPh_2)_2CHCl]: SYNTHESIS,STRUCTURE AND ITS REACTION MECHANISM

合成了新配合物PdCl2[(PPh2)CHCl]，用核磁、红外光谱、元素分析等表征了其结构，X－rax衍射确定了单晶结构.应用电子顺磁共振-自旋捕获（EPR－ST）对技术研究了其反应的机理．捕获到PPh2及含碳自由基中间体，提出了反应机理．

Complex PdCl2 [(PPh2 )2CHCl] has been prepared by treatment of Pd(OAc)2 with dppm in solvent CHaCla. IR,1 H NMR, 31P NMR, elemental analysis, EDS data are given. The molecular structure of PdCl2[(PPh2)CHCl] has been determined by single crystal X-ray diffeaction. The reaction mechanism is tentatively proposed and discussed. Radicals .PPh2 and other radicals were trapped by PBN. This reaction was proved to be a free radical reaction by EPR- ST method. The solvent CH2Cl2 participated in the reaction.