853029-30-8

Upstream product

• 853029-28-4 ((2,6-i-Pr₂C₆H₃)NC(Me)CHC(Me)N(2,6-i-Pr₂C₆H₃))SmCl₂(tetrahydrofuran)Cl₂Sm((2,6-i-Pr₂C₆H₃)NC(Me)CHC(Me)N(2,6-i-Pr₂C₆H₃)) 
• 40949-94-8 potassium hexamethylsilazane 
• 853029-29-5 ((2,6-i-Pr₂C₆H₃)NC(Me)CHC(Me)N(2,6-i-Pr₂C₆H₃))SmClN(SiMe₃)2 
• 1070-89-9 sodium hexamethyldisilazane 

Relevant academic research and scientific papers

Synthesis of dianionic β-diketiminate lanthanide amides L′LnN(SiMe3)2THF by deprotonation of the β-diketiminate ligand L (L = {[(2,6- i Pr2C6H 3)NC(CH3)]2CH}-) and the transformation with [HNEt3][BPh4] to the cationic samarium amide [LSmN(SiMe3)2][BPh4]

Reaction of β-diketiminate lanthanide dichlorides LLnCl 2(THF)2 (L = {[(2,6-iPr2C6H 3)NC(CH3)]2CH}-) with 2 equiv of NaN(SiMe3)2 in toluene afforded lanthanide amide complexes supported by a dianionic β-diketiminate ligand L′, L′LnN(SiMe3)2(THF) (L′ ={(2,6-iPr 2C6H3)NC(CH2)CHC(CH 3)N(2,6-iPr2C6H3)}2-, Ln = Yb (1), Y (2), Gd (3), Sm (4)), in moderate yields via deprotonation of L. Addition of a small amount of THF led to an increase of the yields of 1-4. Lanthanide metals have a great influence on the deprotonation of L. The same reaction with LNdCl2(THF)2 did not afford the analogous complex L′NdN(SiMe3)2(THF), but the normal diamide complex LNd[N(SiMe3)2]2 (5) was isolated instead. The metathesis reaction of the triply bridged dichlorides of Sm, LSmCl(μ-Cl)3SmL(THF), with 2 equiv of NaN(SiMe3) 2 yielded the diamide complexes LSm[N(SiMe3) 2]2 in toluene, while complex 4 was formed instead in a mixture of toluene and THF. In contrast, the same reactions with LYbCl(μ-Cl)3YbL(THF) either in toluene or in a mixture of toluene and THF both afforded 1. Treatment of 4 with [HNEt3][BPh4] in THF at room temperature gave the novel cationic Sm β-diketiminate amide complex [LSmN(SiMe3)2(THF)2][BPh4] (7) in good yield. Complexes 1-5 and 7 have been confirmed by single-crystal X-ray structural analyses. The mechanism of deprotonation of L was discussed.

Synthesis and characterization of mono β-diketiminatosamarium amides and hydrocarbyls

Reaction of SmCl3 with 1 eq of KL (L = [DippNC(Me)CHC(Me)NDipp]; Dipp = 2,6-i-Pr2C6H3) in THF afforded the dimeric samarium dichloride LSmCl2(THF)Cl2SmL (1) in high yield. Reactions of 1 wi