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Structure–reactivity correlations in new W(IV) and Nb(IV) silicon-bridged ansa-metallocene hydrides

Abstract:
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. (c) 2005 Elsevier Ltd. All rights reserved.
Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1016/j.poly.2005.08.025

Authors

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Institution:
University of Oxford
Division:
MPLS
Department:
Chemistry
Sub department:
Inorganic Chemistry
Research group:
M. L. H. Green
Oxford college:
Jesus College
Role:
Author
More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Chemistry
Sub department:
Inorganic Chemistry
Oxford college:
St Catherine's College
Role:
Author
More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Chemistry
Sub department:
Inorganic Chemistry
Oxford college:
Balliol College
Role:
Author
More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Chemistry
Sub department:
Inorganic Chemistry
Role:
Author


Publisher:
Elsevier
Journal:
Polyhedron More from this journal
Volume:
25
Issue:
2
Pages:
406-420
Publication date:
2006-01-01
DOI:
ISSN:
0277-5387


Language:
English
Keywords:
Subjects:
UUID:
uuid:f144c50f-651d-4529-b29a-ee5713aa1ed5
Local pid:
ora:2661
Deposit date:
2009-03-02
ARK identifier:

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