作者:Teresa K. Meister、Jens W. Kück、Korbinian Riener、Alexander Pöthig、Wolfgang A. Herrmann、Fritz E. Kühn
DOI:10.1016/j.jcat.2016.01.032
日期:2016.5
are presented. These compounds are synthesized from Karstedt’s catalyst [Pt2(dvtms)3] and the respective imidazo[1,5-a]pyridinium salts using tBuOK as base. 4a–g were characterized (1H, 13C, 19F, 195Pt NMR, EA, IR, UV–Vis) and investigated by cyclic voltammetry. The compounds are efficient and selective catalysts in the model hydrosilylation reaction of oct-1-ene with HSi3O2Me7. The combination of spectroscopic
一系列式[Pt(dvtms)(ImPy–R)]的配合物(dvtms = 1,1,3,3-四甲基-1,3-二乙烯基二硅氧烷,ImPy–R = 2-R-咪唑[1,5 -a]吡啶-3-亚烷基; R = 4-氰基苯基(4a),4-三氟甲基苯基(4b),苯基(4c),4-甲氧基苯基(4d),均三(4e),五氟苯基(4f),叔丁基(4克))。这些化合物是由Karstedt催化剂[Pt 2(dvtms)3 ]和相应的咪唑并[1,5-a]吡啶鎓盐以t BuOK为碱合成的。表征4a – g(1H,13 C,19 F,195 Pt NMR,EA,IR,UV-Vis),并通过循环伏安法进行了研究。在辛-1-烯与HSi 3 O 2 Me 7的模型硅氢化反应中,这些化合物是有效的选择性催化剂。对B3LYP / 6-31G ***理论水平的光谱学和理论研究相结合,揭示了HOMO能级E HOMO,氧化势E Ox和催化活