E=SAs>Sb. These reactivities are parallel with the electrochemical oxidation potentials reported for Ph2E and with the first ionization potentials reported for Ph3M. The rate of Φ2Te was faster than that of Ph3P and slightly faster than that of Φ3Sb. From the reactivity of [Φ2E-Me]+ salts with nucleophiles, the E+–Me bond strengths were estimated to increase in the order E=Se
硫,
硒和
碲的2,6-二
甲氧基苯基衍
生物,如ΦEEΦ,Φ 2 E,ΦSeH,[MeΦ 2 E] X(X =内消旋4,CLO 4),Φ 2
EO· X ^ h 2 O,[ Φ 2
EOR] CLO 4,[Φ 2
EOH] CLO 4(R =甲基,乙基)中,Me 2的SnCl 2 ·2Φ 2
EO(E = S,Se)的[Φ= 2,6-(M
EO)2 C ^ 6 H 3 ; 已经制备了E = S,Se,Te],并且它们的性质与普通的苯基衍
生物相比。Φ的反应速率2e为
硫酸二甲酯和丁基
溴化物的顺序ë增加= S <硒<碲,这与那些pH值相比,3 M和Φ 3 M,M = P>如图>
锑。这些反应性是平行与电
化学氧化势报道博士2 E和与所述第一电离势报道博士3 M.Φ率2
碲比博士的更快3 P和比Φ的稍快3的Sb。从的反应性[Φ 2 E-本人] +与亲核试剂的盐中,E + -Me粘合强度估计的顺序E增加=
硒