(π-Allyl)palladium Complexes with <i>N</i>,<i>N</i>‘-Diphenylbispidinone Derivatives as a New Type of Chelating Nitrogen Ligand: Complexation Studies, Spectroscopic Properties, and an X-ray Structure of (3,7-Diphenyl-1,5-dimethylbispidinone)[(1,3-η<sup>3</sup>-propenyl)- palladium] Trifluoromethanesulfonate
作者:Adolf Gogoll、Helena Grennberg、Andreas Axén
DOI:10.1021/om9609527
日期:1997.3.1
bidentate nitrogen ligands for (π-allyl)palladium complexes have been investigated. Complexes of these ligands and of N,N‘-diphenylpiperazine (7) and N,N‘-diphenyl-1,5-diazacyclooctane (8) with (1,3-η3-propenyl)palladium are described, in particular their effects on the proton chemical shifts of the π-allyl ligand. Ligand dynamics of the complexes is discussed. The structure of [(3,7-diphenyl-1,5-dimethylbispidinone)(1
合成了一系列的3,7-二氮杂双环[3.3.1]壬烷(双吡啶)衍生物,并研究了它们作为(π-烯丙基)钯配合物的双齿氮配体的性质。这些配体的和的复合物Ñ,Ñ “-diphenylpiperazine(7)和Ñ,Ñ ” -二苯基-1,5- diazacyclooctane(8)与(1,3-η 3 -丙烯基)钯中描述,尤其是其效果π-烯丙基配体的质子化学位移 讨论了配体的配体动力学。的[(3,7-二苯基-1,5- dimethylbispidinone)(1,3-η结构3 -丙烯基)的Pd] CF 3 SO 3(15)已通过X射线晶体学测定。N,N'-二苯基联吡啶衍生物显示出与π-烯丙基配体的异常大的空间相互作用,这表明π-烯丙基平面朝N-Pd-N平面倾斜122.8(8)°。由于芳环电流引起的π-烯丙基质子的化学位移变化与配合物的几何形状有关。该配体在较大的2-亚甲基-6,6-二甲基双环测试[3.1