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Issue 32, 2016
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Unusual κ1 coordination of a β-diketiminate ligand in niobium complexes

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Abstract

Reaction of (BDI)Nb(NtBu)Cl2py with NaCp results in the κ1-coordination of the BDI ligand in the complex (κ1-N,BDI)CpNb(NtBu)Cl (2). Via chloride abstraction from 2, we develop synthetic routes to structurally analogous cationic and NbIV pseudo-four coordinate complexes where the BDI ligand returns to the κ2-coordination mode. We compare these to our previously reported tetrahedral niobium bis(imido) complexes to investigate the effects of the Cp ligand on the properties of Nb-BDI-imido systems. Substitution of the chloride in 2 with a hydride also causes return to bidentate binding of the BDI ligand. The X-ray crystal structures of these complexes have been determined, and the structural parameters reflecting the consequences of the electronic differences are discussed.

Graphical abstract: Unusual κ1 coordination of a β-diketiminate ligand in niobium complexes

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Supplementary files

Article information


Submitted
15 Jun 2016
Accepted
15 Jul 2016
First published
27 Jul 2016

Dalton Trans., 2016,45, 12661-12668
Article type
Paper

Unusual κ1 coordination of a β-diketiminate ligand in niobium complexes

J. A. Ziegler, R. G. Bergman and J. Arnold, Dalton Trans., 2016, 45, 12661
DOI: 10.1039/C6DT02373H

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