Synthesis, Structures, and Stability of N-Donor-Stabilized N-Silylphosphoranimine Cations
作者:Keith Huynh、Eric Rivard、Alan J. Lough、Ian Manners
DOI:10.1002/chem.200601452
日期:2007.4.16
silver salts as halide abstractors. Reactions in the absence of silver salts yield the corresponding cations, with halide counterions. The stability of the salts is highly dependent on the phosphoranimine substituent and the nature of the counteranion, such that electron-withdrawing substituents and non-coordinating anions yield the most stable salts. X-ray structural determination of the cations reveal
一系列DMAP稳定的(DMAP = 4-二甲基氨基吡啶)N-甲硅烷基磷酸氨基苯胺阳离子[DMAPPR(2)== NSiMe(3)](+),带有R = Cl([8](+)),Me([10 a](+)),Me / Ph([10 b](+)),Ph([10 c](+))和OCH(2)CF(3)([10 d](+))取代基,已从母体磷胺亚胺Cl(3)P == NSiMe(3)(3)和XR(2)P == NSiMe(3)(X = Cl(9),Br(11); R = Me(9 a和11 a),Me / Ph(9 b和11 b),Ph(9 c和11 c)和OCH(2)CF(3)(9 d和11 d)),带有DMAP和银盐作为卤化物的提取物。在不存在银盐的情况下,反应会生成相应的阳离子以及卤化物抗衡离子。盐的稳定性高度取决于磷氨基胺取代基和抗衡阴离子的性质,从而吸电子取代基和非配位阴离子产生最稳定的盐。阳离