PhP(CH2C6H4-o-NHPh)2 (AH2) and PhP(C6H4-o-CH2NHXyl)2 (BH2 with Xyl = 3,5-Me2C6H3) were employed for the synthesis of tantalum(V) alkyls, which were then studied with respect to hydrogenolysis. In the case of AH2, the tantalum trimethyl complex [Ta(A)Me3] (1) and the tantalum hydrocarbyl complex [Ta(A)(CH2SiMe3)(η2-EtC≡CEt)] (2) were prepared from the ligand’s dilithium salt (A)Li2(diox). Upon hydrogenolysis
密切相关的亚苄基连接的二
氨基膦PhP(CH 2 C 6 H 4 - o -NHPh)2(A H 2)和PhP(C 6 H 4 - o -CH 2 NHXyl)2(B H 2且Xyl = 3,使用5-Me 2 C 6 H 3)合成
钽(V)烷基,然后对其进行氢解研究。在A H 2的情况下,三甲基
钽络合物[TA(A)Me 3](1)和
钽烃基络合物[TA(甲)(CH 2森达3)(η 2 -EtC≡CEt)](2)由配位体的二
锂盐(制备甲)栗2(DIOX)。在1和2进行氢解后,分别观察到
甲烷和SiMe 4的形成,但无法检测到明确定义的
氢化钽。在B H 2的情况下,环
金属化物种[TA(B *)(NMe 2)2 ](3其中B * =κ4 - Ñ,P,Ñ,Ç - (PH P(C 6 H ^ 4 - ö -CH 2 Ñ的Xyl)(C 6 H ^ 4 - ö - Ç ħ Ñ的Xyl))3-)分离并转化为相应的二
碘代物种[TA(B