Bis{μ-N-[(N,N-dimethylamino)dimethylsilyl]-2,6-dimethylanilido}lithium(I)

Ren, Guina; Shang, Donglin; Guo, Jianping

doi:10.1107/s1600536807006460

Cited by 4 publications

(1 citation statement)

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“…The reactions of N-substituted anilines with lithium derivatives commonly formed anilidolithium dimers . The potassium hydrido-anilidate, without evidence of crystal structure, was proposed as a reactive intermediate in organic synthesis .…”

Section: Resultsmentioning

confidence: 99%

μ₂,η¹-N-[(N,N-Dimethylamino)dimethylsilyl]-2,6-diisopropylanilido Metal (Li, Zr, Hf) Compounds and the Catalytic Behaviors of the IVB Compounds in Ethylene (Co)Polymerization

et al. 2010

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The dimer of lithium μ 2 ,η 1 -N-[(N,N-dimethylamino)dimethylsilyl]-2, [LiN(2, Pr 2 C 6 H 3 )Si(CH 3 ) 2 N(CH 3 ) 2 ] 2 represented as (LiL) 2 ] reacted with group 4 chlorides to form corresponding compounds, which were crystallized and confirmed by X-ray diffraction analysis as compounds of pseudotetrahedral ZrL 2 Cl 2 (2) and chloro-bridged dinuclear tetrahedral compounds ZrLCl 2 (μ-Cl) 2 Li 3 2THF (3), ZrLCl 2 (μ-Cl) 2 Li 3 2Et 2 O (4), HfLCl 2 ( μ-Cl) 2 Li 3 2Et 2 O (5), and [ZrLCl 2 (μ-Cl)] 2 (6). The catalytic behaviors of group 4 compounds were investigated in the presence of MAO as a cocatalyst. Compound 4 exhibited high activity for ethylene polymerization, while compounds 2 and 6 showed good activities for both ethylene polymerization and ethylene/1-hexene copolymerization.ξ Dedicated to Prof. Dr. Uwe Rosenthal of the University of Rostock, Germany, on the occasion of his 60th birthday.

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Section: Resultsmentioning

confidence: 99%

μ₂,η¹-N-[(N,N-Dimethylamino)dimethylsilyl]-2,6-diisopropylanilido Metal (Li, Zr, Hf) Compounds and the Catalytic Behaviors of the IVB Compounds in Ethylene (Co)Polymerization

et al. 2010

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Synthesis, Characterization, and Materials Chemistry of Group 4 Silylimides

et al. 2011

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This paper focuses on the development of potential single source precursors for M-N-Si (M = Ti, Zr or Hf) thin films. The titanium, zirconium, and hafnium silylimides (Me(2)N)(2)MNSiR(1)R(2)R(3) [R(1) = R(2) = R(3) = Ph, M = Ti(1), Zr (2), Hf (3); R(1) = R(2) = R(3) = Et, M = Ti (4), Zr (5), Hf (6); R(1) = R(2) = Me, R(3) = (t)Bu, M = Ti (7), Zr (8), Hf (9); R(1) = R(2) = R(3) = NMe(2), M = Ti (10), Zr (11), Hf (12)] have been synthesized by the reaction of M(NMe(2))(4) and R(3)R(2)R(1)SiNH(2). All compounds are notably sensitive to air and moisture. Compounds 1, 2, 4, and 7-10 have been structurally characterized, and all are dimeric, with the general formula [M(NMe(2))(2)(μ-NSiR(3))](2), in which the μ(2)-NSiR(3) groups bridges two four-coordinate metal centers. The hafnium compound 3 possesses the same basic dimeric structure but shows additional incorporation of liberated HNMe(2) bonded to one metal. Compounds 11 and 12 are also both dimeric but also incorporate additional μ(2)-NMe(2) groups, which bridge Si and either Zr or Hf metal centers in the solid state. The Zr and Hf metal centers are both five-coordinated in these species. Aerosol-assisted CVD (AA-CVD) using 4-7 and 9-12 as precursors generates amorphous films containing M, N, Si, C, and O; the films are dominated by MO(2) with smaller contributions from MN, MC and MSiON based on XPS binding energies.

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Zirconium complexes based on an ethylene linked amidinate–amido ligand: synthesis, characterization and ethylene polymerization

Bai

et al. 2017

New J. Chem.

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Bis{μ-N-[(N,N-dimethylamino)dimethylsilyl]-2,6-dimethylanilido}lithium(I)

Abstract: Key indicatorsSingle-crystal X-ray study T = 203 K Mean (C-C) = 0.005 Å R factor = 0.081 wR factor = 0.170 Data-to-parameter ratio = 17.0For details of how these key indicators were automatically derived from the article, see

Cited by 4 publications

References 6 publications

μ₂,η¹-N-[(N,N-Dimethylamino)dimethylsilyl]-2,6-diisopropylanilido Metal (Li, Zr, Hf) Compounds and the Catalytic Behaviors of the IVB Compounds in Ethylene (Co)Polymerization

μ₂,η¹-N-[(N,N-Dimethylamino)dimethylsilyl]-2,6-diisopropylanilido Metal (Li, Zr, Hf) Compounds and the Catalytic Behaviors of the IVB Compounds in Ethylene (Co)Polymerization

Synthesis, Characterization, and Materials Chemistry of Group 4 Silylimides

Zirconium complexes based on an ethylene linked amidinate–amido ligand: synthesis, characterization and ethylene polymerization

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Bis{μ-N-[(N,N-dimethylamino)dimethylsilyl]-2,6-dimethylanilido}lithium(I)

Abstract: Key indicatorsSingle-crystal X-ray study T = 203 K Mean (C-C) = 0.005 Å R factor = 0.081 wR factor = 0.170 Data-to-parameter ratio = 17.0For details of how these key indicators were automatically derived from the article, see

Cited by 4 publications

References 6 publications

μ2,η1-N-[(N,N-Dimethylamino)dimethylsilyl]-2,6-diisopropylanilido Metal (Li, Zr, Hf) Compounds and the Catalytic Behaviors of the IVB Compounds in Ethylene (Co)Polymerization

μ2,η1-N-[(N,N-Dimethylamino)dimethylsilyl]-2,6-diisopropylanilido Metal (Li, Zr, Hf) Compounds and the Catalytic Behaviors of the IVB Compounds in Ethylene (Co)Polymerization

Synthesis, Characterization, and Materials Chemistry of Group 4 Silylimides

Zirconium complexes based on an ethylene linked amidinate–amido ligand: synthesis, characterization and ethylene polymerization

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μ₂,η¹-N-[(N,N-Dimethylamino)dimethylsilyl]-2,6-diisopropylanilido Metal (Li, Zr, Hf) Compounds and the Catalytic Behaviors of the IVB Compounds in Ethylene (Co)Polymerization

μ₂,η¹-N-[(N,N-Dimethylamino)dimethylsilyl]-2,6-diisopropylanilido Metal (Li, Zr, Hf) Compounds and the Catalytic Behaviors of the IVB Compounds in Ethylene (Co)Polymerization