D. Churchill et al., The ansa effect in permethylmolybdenocene chemistry: A [Me2Si] ansa bridgepromotes intermolecular C-H and C-C bond activation, ORGANOMETAL, 18(13), 1999, pp. 2403-2406
Access to the [Me2Si] ansa-bridged permethylmolybdenocene system is provide
d by the synthesis of [Me2Si(C5Me4)(2)]MoCl2 from the reaction of MoCl5 wit
h a mixture of[Me2Si(C5Me4)(2)]Li-2 and NaBH4, followed by treatment with C
HCl3. Comparison with the chemistry of the non-ansa Cp*2MoX(2) system indic
ates that incorporation of the [Me2Si] ansa bridge promotes intermolecular
C-H and C-C bond activation reactions.