methodologies were unsuccessful. The reduction of 4 with KC8 gave the known Th(III) complex, [Th(Cp′′)3]. Complexes 2–6 were characterised by single crystal XRD, whilst 2, 4 and 5 were additionally characterised by 1H, 13C1H} and 29Si1H} NMR spectroscopy, ATR-IR spectroscopy and elemental analysis. In order to probe differences in M(IV)–Si bonds for d- and f-block metals we studied the electronic structures
我们报告了一系列具有通式 [M(Cp R ) 2 Si(SiMe 3 ) 3 }(X)] (M = Hf, Th; Cp R = Cp', C 5 H 4 (SiMe 3 )} 或 Cp'', C 5 H 3 (SiMe 3 ) 2 -1,3};X = Cl, C 3 H 5 )。[M(Cp R ) 2 (Cl) 2 ] (M = Zr or Hf, Cp R = Cp'; M = Hf or Th, CpR = Cp'') 与等摩尔 KSi(SiMe 3 ) 3 } 得到各自的单
硅烷络合物 [M(Cp') 2 Si(SiMe 3 ) 3 }(Cl)] (M = Zr, 1 ; Hf, 2 ), [Hf(Cp′′)(Cp′)Si(SiMe 3 ) 3 }(Cl)] ( 3 ) 和 [Th(Cp′′) 2 Si(SiMe 3 ) 3 }(Cl )] ( 4 ), 只有微量的3可能是通过silatropic