Structure-reactivity correlations in new W(IV) and Nb(IV) silicon-bridged ansa-metallocene hydrides
Conway, S. L. J., Green, M. L. H., Pascu, S. I. and Peake, H. O., 2006. Structure-reactivity correlations in new W(IV) and Nb(IV) silicon-bridged ansa-metallocene hydrides. Polyhedron, 25 (2), pp. 406-420.
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W(IV) and Nb(IV) derivatives: [W(L1)MeH] (1), [W(L1)MeH] (2) and [W(L1)O] (3), [W(L2)Cl-2](4), [W(L2)H-2](5), [W(L2)H-3][BF4] (6), [Nb(L2)Cl-2](7) and [Nb(L2)(eta(2)-BH4)](8), where L1 = [(eta-C5H4)(2)SiMe2](2-) and L2 = [(eta-C5H3TMS)(2)SiMe2](2-), have been prepared and characterised. The crystal structures of compounds 5 and 8 have been determined. Thermodynamic parameters for the elimination of methane from compound 2 have been evaluated based on H-1 NMR studies in C6D6. Trimethylsilyl substituents on the cyclopentadienyl rings appear to moderate the structural and dynamic properties of the silicon-bridged ansa-tungstenocenes.
|Creators||Conway, S. L. J., Green, M. L. H., Pascu, S. I. and Peake, H. O.|
|Departments||Faculty of Science > Chemistry|
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