1240049-48-2Relevant academic research and scientific papers
Rare-earth metal phenyl(trimethylsilyl)amide complexes
Schaedle, Christoph,Meermann, Christian,Toernroos, Karl W.,Anwander, Reiner
, p. 2841 - 2852 (2010/10/02)
The reactions of common rare-earth metal chloride, borohydride, and triflate precursors - LnCl3(thf)x, Ln(BH4) 3(thf)3, and La(OTf)3 - with alkali metal amide complexes M[N(SiMe3)(C6H3iPr2-2,6)] (M[NRR']; M = Li, K) were investigated in thf or hexane as a solvent. A. diverse range of products was obtained comprising alkali metal-free mono(rare-earth metal) complexes Y[NRR']Cl2(thf)3 and Ln[NRR']2(BH4)(thf) (Ln = Nd, La), as well as the mononeodymium ate complex [Nd[NRR']2(BH4) 2}(Li(thf)4} and polymeric ate complexes {La[NRR'] 2(thf)(μ-Cl)K(thf)2(n-Cl)}n and {Nd[NRR']2(μ-BH4)Li(thf)2(μ-BH 4)}n. All compounds were characterized by NMR ( 1H and 13C) and FTIR spectroscopy, elemental and X-ray structure analyses. The lithium salts Li[NRR'](thf)3 and Li 4(OTf)4(thf)6 were isolated as side products and structurally characterized. The homoleptic complex La[NRR']3 was prepared following two synthesis protocols in hexane, either by reacting Ln[NRR']2(BH4)(thf) with 1 equiv. of K[NRR'] or treatment of LaCl3(thf)1.25 with. 3 equiv. of K[NRR'].
