Drover Marcus W, Bowes Eric G, Dufour Maeve C, Lesperance-Nantau Lindsay A
Department of Chemistry and Biochemistry, The University of Windsor, 401 Sunset Avenue, Windsor, ON N9B 3P4, Canada.
Dalton Trans. 2020 Nov 25;49(45):16312-16318. doi: 10.1039/d0dt00963f.
Herein, we describe the preparation, characterization, and reactivity of two PtII bis-hydrocarbyl complexes containing the 1,2-bis(di(3-dicyclohexylboraneyl)propylphosphino)ethane (P2BCy4) ligand. These scaffolds are readily accessed from four-fold hydroboration of 1,2-bis(diallylphosphino)ethane PtII precursors. The electrophilcity of such frameworks is showcased by facile coordination of the strong Lewis base, 4-N,N-dimethylaminopyridine (DMAP). Thermolysis reactions of [Pt(P2BCy4)(R)2] (R = CH3 or Ph) show enhanced (and divergent) reactivity when compared to their "all-alkyl" diphosphine counterparts, implicating involvement of the pendant borane groups. This behaviour is attenuated by protection of these units with DMAP.
在此，我们描述了两种含有1,2-双（二（3-二环己基硼烷基）丙基膦基）乙烷（P2BCy4）配体的PtII双烃基配合物的制备、表征及反应活性。这些骨架可通过1,2-双（烯丙基膦基）乙烷PtII前体的四倍硼氢化反应轻松获得。此类骨架的亲电性通过强路易斯碱4-N,N-二甲基氨基吡啶（DMAP）的轻松配位得以展现。与它们的“全烷基”二膦对应物相比，[Pt(P2BCy4)(R)2]（R = CH3或Ph）的热解反应显示出增强的（且不同的）反应活性，这表明侧链硼烷基团参与其中。通过用DMAP保护这些单元，这种行为会减弱。
