Abstract
The successful isolation and characterization of derivatization reaction products of the niobium imido complex L2NbCl(NAr) (L = ortho-metalated acetophenone imine, Ar = 2,6-iPr2C6H3) with carbon and oxygen donor ligands such as Me, Me3SiCH2, PhCC, Me3SiCC, CF3SO3, and MeO are described. These more reactive σ-donor ligands were readily installed in place of the chloride ligand through salt metathesis reactions. The (trimethylsilyl)methyl complex showed significant α-agostic interactions between the methylene group and the niobium center. Similar strategies to derivatize the chloride complex utilizing lithiated amides (LiNMe2, LiNEt2, LiNiPr2, and LiNC5H10) resulted in the production of a niobium hydride species due to β-hydrogen elimination processes. All of the resulting C1-symmetric complexes were formed as predominantly a single isomer and were fully characterized using a combination of 1H and 13C NMR spectroscopy, elemental analyses, and X-ray crystallography, when possible.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
