for the known triphenylphosphine complexes. Again, the contrast of the (31)P NMR and (13)C NMR chemical shifts or C-O or M-Cl stretching frequencies, when applied, does not show an important electronic effect on the metal complex of the trimethylsilyl substituted phosphines with respect to P(C(6)H(5))(3) derivatives. Solubility measurements of complexes 3a and 3b in scCO(2) were performed. We conclude
以下三芳基
膦配体P(Ar)(2)(Ar')(Ar = Ar'= 4-Me(3)SiC(6)H(4),1b; 4-Me(3)CC( 6)H(4),1d; 4-F(3)CC(6)H(4),1e; Ar = C(6)H(5),Ar'= 4-Me(3)SiC(6) H(4),1c)已通过实验和理论进行了评估。相应合成
硒化物Se = P(Ar)(2)(Ar'),2b,c的J(P-Se)耦合常数的测量以及膦孤对(HOMO)的能量的DFT计算与三
氟甲基的强电子效应形成鲜明对比的是,当三甲基甲
硅烷基连接到芳基环上时,对取代的膦的电子性能的影响很小。这些三芳基
膦配体P(Ar)(2)(Ar')与(eta5-C(5)H(5))Co(CO)(2)反应,(eta5-C(5)H(5))Co(CO)I(2)或PdCl(2)生成新化合物(eta5-C(5)H(5))Co(CO)[P(Ar )(2)(Ar')],3b,d;