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Reactivity of rhodium hydrido and silyl complexes towards 1,1-difluoroallene
Journal of Fluorine Chemistry ( IF 1.9 ) Pub Date : 2018-08-08 , DOI: 10.1016/j.jfluchem.2018.08.002
Anna Lena Raza , Moritz F. Kuehnel , Maria Talavera , Michael Teltewskoi , Mike Ahrens , Paul Kläring , Thomas Braun , Dieter Lentz

The reaction of rhodium(I) complexes [Rh(E)(PEt3)3] (E = H (2), Si(OEt)3 (4)) with 1,1-difluoroallene provides the rhodium (III) complexes [Rh(η2-CH2CCF2)(η3-CH2C(E)CF2)(PEt3)2] (E = H (3), Si(OEt)3 (5)). The conversions involve the coordination of one equivalent of difluoroallene to form a rhodiumcyclopropane and the insertion of a second equivalent into the Rh-E bond. X-ray crystallography as well as DFT calculations support the suggested structures as well as the arrangement of the fluorinated ligands. In contrast, when [Rh{Si(OEt)3}(PEt3)3] (4) reacted with hexafluoropropene, only the coordination of the fluorinated olefin was observed resulting in the formation of [Rh(CF2CFCF3){Si(OEt)3}(PEt3)2] (6).



中文翻译:

铑氢化物和甲硅烷基络合物对1,1-二氟丙二烯的反应性

铑(I)配合物[Rh(E)(PEt 33 ](E = H(2),Si(OEt)34))与1,1-二氟丙二烯的反应提供了铑(III)配合物[的Rh(η 2 -CH 2 ç CF 2)(η 3 -CH 2 C(E)CF 2)(PET 32 ](E = H(3),硅(OET)35))。所述转化涉及一当量的二氟丙二烯的配位以形成铑环丙烷,以及第二当量的二氟环戊烯插入Rh-E键中。X射线晶体学以及DFT计算都支持建议的结构以及氟化配体的排列。相反,当[Rh {Si(OEt)3 }(PEt 33 ](4)与六氟丙烯反应时,仅观察到氟化烯烃的配位,导致形成[Rh(CF 2 CFCF 3){Si (OEt)3 }(PEt 32 ](6)。

更新日期:2018-08-08
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