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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Unusual kappa 1 coordination of a beta-diketiminate ligand in niobium complexes
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Unusual kappa 1 coordination of a beta-diketiminate ligand in niobium complexes

机译:铌配合物中β-二酮消除配体的异常κ1配位

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Reaction of (BDI)Nb((NBu)-Bu-t)Cl(2)py with NaCp results in the kappa(1)-coordination of the BDI ligand in the complex (kappa(1)-N, BDI) CpNb((NBu)-Bu-t)Cl (2). Via chloride abstraction from 2, we develop synthetic routes to structurally analogous cationic and Nb-IV pseudo-four coordinate complexes where the BDI ligand returns to the. 2-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.
机译:(BDI)Nb((NBu)-Bu-t)Cl(2)py与NaCp的反应导致复合物中(kappa(1)-N,BDI)CpNb( (NBu)-Bu-t)Cl(2)。通过从2提取氯离子,我们开发了结构相似的阳离子和Nb-IV假四配位配合物的合成途径,其中BDI配体返回到其中。 2协调模式。我们将这些与我们先前报道的四面体铌双(亚氨基)配合物进行比较,以研究Cp配体对Nb-BDI-亚氨基系统性能的影响。氯化物用氢化物取代2也会导致BDI配体的二齿结合恢复。确定了这些配合物的X射线晶体结构,并讨论了反映电子差异后果的结构参数。

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