metal center in a bidentate fashion in the catalytically active species. By comparison, the neutral complexes X1‐acetone, X1‐dmso, and X1‐pyr showed very low activity towards ethylene to give traces of oligomers. DFT analyses taking into account the two possible coordination modes (O or N) of the sulfonamide ligand for the cationic system CF31+ suggested that the experimentally observed high activity in
两个系列的阳离子
钯(II)甲基络合物[(2-MeOC 6 H 4)2 PC 6 H 4 SO 2 NHC 6 H 3(2,6-R 1,R 2)] PdMe} 2 [A] 2(X 1 + -A:R 1 = R 2 = H:H 1 + -A ; R 1 = R 2 = CH(CH 3)2:D
IPP 1 + -A ; R 1= H,R 2 = CF 3:
CF3 1 + -A ; A = BF 4或SbF 6)和中性
钯(II)甲基络合物[(2-MeOC 6 H 4)2 PC 6 H 4 SO 2 NC 6 H 3(2,6-R 1,R 2)] PdMe (L)}(X 1-
丙酮:L =
丙酮; X 1-dmso:L =
二甲基亚砜; X 1-pyr:合成并充分表征了被膦-磺酰胺螯合的L =
吡啶)。从
化学计量上将
丙烯酸甲酯(MA)插入所有配合物中显示,在MA的首次插入中,2,1区域
化学起主导作用。随后,对于阳离子配合物X