金属配合物[MBr{(Ph_2PCH_2CH_2)_2C_6H_3}],[M=Pd(Ⅱ)、Pt(Ⅱ)]的合成及晶体结构

Synthesis and Crystal Structure of two New Complexes [MBr{(Ph_2PCH_2CH_2)_2C_6H_3}], [M=Pd(Ⅱ),Pd (Ⅱ)]

合成了一个新的双膦配位体：2 ，6 - 双（二苯基膦乙基）溴苯，通过Pd0(DBA）2 ，（DBA为PhHC= CHCOCH=CHPh）， Pt0（PPh3）4 和该配位体的氧化加成反应，分别得到了两个新的金属配合物：［MBr{(Ph_2PCH_2CH_2)_2C_6H_3}］,[M＝Pd(Ⅱ)、Pt(Ⅱ)］(2)，并进行了31P NMR，1 H NMR表征。通过X．射线晶体结构测定，这两个配合物的晶体学参数分别为：配合物 （1）的晶体属正交晶系，空间群 Pna21， a＝16．806（2）A，b=18．578（2）A，C＝9．643（5）A；配合物（2）的晶体属单斜晶系，空间群p21／a，a＝12．364（3）A，b＝17.676（4）A，C=13．672（7）A，P=94．86（3）“。

A new diphosphine ligand, 2, 6 -bis (diphenylphosphinoethyl ) bromobenze ne, was synthesized and two new complexes, [PdBr{ (Ph2PCH2CH2)2C6H3 } ] (1) and [PtBr{ (Ph2PCH2CH2)2C6H3 } ] (2), were obtained by the oxidative addition reaction of Pd'(DBA)2(DBA is PhHC = CHCOCH = CHPh) and Pt0(PPh3) 4 with this ligand, respectively. The two complexes were characterized by 3lP NMR, IH NMR and X-ray diffraction. The crystallographic data of complex (1) are: space group Pna21, a = 16. 806(2) A, b = 18. 578 (2) A, c = 9. 643 (5) A and these of complex (2) are: space group P21/ a, a = 12. 364(3)A, b = 17. 676(4)A, c = 13. 672(7)A, β=94. 8b(3)'.