1260434-52-3Relevant academic research and scientific papers
Four-coordinate erbium organometallic and coordination complexes: Synthesis and structure
Johnson, Kevin R.D.,C?té, Adrien P.,Hayes, Paul G.
, p. 2747 - 2755 (2010)
The synthesis and reactivity of several erbium organometallic and coordination complexes supported by a β-diketiminato ancillary ligand are described. The reaction of ErCl3(THF)3.5 with LiL (L = ArNC(Me)CHC(Me)NAr; Ar = 2,6-iPr2-C6H 3) afforded the dimeric complex Er(L)Cl(μ-Cl)3Er(L) (THF), 1. Reaction of complex 1 with four equiv of the bulky silylamide LiN(SiMe3)2 generated the unexpected four-coordinate adduct dimer [Er(L)N(SiMe3)2Cl(μ-(LiN(SiMe 3)2))]2, 2. Conversely, reaction of 1 with two or four equiv of LiCH2SiMe3 led to the base-free mixed chloro/alkyl species [Er(L)(CH2SiMe3)(μ-Cl)] 2, 3, and the four-coordinate dialkyl Er(L)(CH2SiMe 3)2, 4, respectively. The protonolysis reactivity of 4 was demonstrated by reaction with [Et3NH]I to generate Er(L)I 2, 5. By contrast, reaction of complex 1 with trimethylsilyliodide resulted in the formation of ErI3(THF)3, 6, through a ligand redistribution process. Compounds 1-6 were characterized by single crystal X-ray diffraction, multinuclear NMR spectroscopy, FT-IR spectroscopy, solution magnetic susceptibility measurements and CHN combustion analysis.
