formation of the oxalate-bridged samarium dimer reported from the reaction of CO2 with the Cp*2Sm(thf)2 complex. Otherwise, the reaction with CO does not proceed with the bulky complexes, while traces of O2 have led to the formation of the original bridged peroxo samarium dimer [Cpttt2Sm]2(μ-O2) (6). The mechanism for these reactions is studied herein by experiments and also by theoretical computations. The
无盐二价sa络合物Cp
TT 2 Sm(1 ; Cp
TT = 1,3-(t Bu)2(C 5 H 3))已通过SmI 2的盐复分解反应在
乙醚中合成。通过在116°C减压下升华,获得了适合X射线研究的1晶体。的溶解1在THF和
吡啶溶液通向溶剂加合物的Cp
TT 2(THF)的Sm 2(3)1和Cp
TT 2(PY)(SM 4),分别,而干燥3在减压下产生Cp
TT Sm(thf)(5)。CO 2与无碱二价sa络合物Cp
TT 2 Sm(1)和Cp
TTt 2 Sm(2 ; Cp
TTt = 1,2,4-(t Bu)3(C 5 H 2))
铅的反应到完全形成桥接
碳酸钐二聚体[Cp的
TTT 2 SM] 2(μ-CO 3)(7)和混合[Cp
TT 2 SM] 2(μ-CO 3)(8)。这指示了在两种情况下CO 2的还原歧化以及CO的释放。这与由CO 2与Cp * 2 Sm(thf)2络合物的反