1184-58-3Relevant articles and documents
Molecularly simple dimethylaminomethyl compounds of aluminum, gallium, and indium
Lustig, Christian,Mitzel, Norbert W.
, p. 242 - 249 (2003)
The dimethylaminomethyl compounds (Me2AlCH2NMe2)2 (1), (Me2GaCH2NMe2)2 (2), (Me2InCH2NMe2)2 (3), (Me2AlCH2NMe2)·(MeClAlCH2NMe 2) (4), [ClAl(CH2NMe2)2]2 (5), and [Al(CH2NMe2)3]2 (6) have been prepared by reacting LiCH2NMe2 with the corresponding element or organoelement chlorides. Characterization was undertaken by means of elemental analyses, NMR spectroscopy (1H, 13C, 27Al), and mass spectrometry. An unusually low 27Al NMR chemical shift of 6 (62 ppm) was observed indicating a possible coordination number higher than four at aluminum in solution. The crystal structures of all compounds but 3 have been determined and confirm that all form dimers with six-membered M2C2N2 rings in the chair conformation. The mass spectra indicate that the dimers are retained in the gas phase, and for 1 the molecular dynamics of ring inversion was monitored in solution by variable-temperature NMR spectroscopy, showing that the barrier for the inversion process (9 kcal mol-1) is comparable to that of cyclohexane. Calculations at the B3LYP/6-311G(d) level of theory confirm that the molecular structures of 1 and 2 are almost undistorted in the solid state. DFT calculations (B3LYP/6-311G(d)) for the monomeric three-membered ring isomers of 1 and 2 show these to be much higher in energy (81 and 77 kJ mol-1 per monomer) than the corresponding six-membered ring dimers.
Carey, A. A.,Schram, E. P.
, p. 79 - 82 (1982)
Formation of trivalent zirconocene complexes from ansa-zirconocene-based olefin-polymerization precatalysts: An EPR- and NMR-spectroscopic study
Lenton, Taylor N.,Bercaw, John E.,Panchenko, Valentina N.,Zakharov, Vladimir A.,Babushkin, Dmitrii E.,Soshnikov, Igor E.,Talsi, Evgenii P.,Brintzinger, Hans H.
, p. 10710 - 10719 (2013)
Reduction of Zr(IV) metallocenium cations with sodium amalgam (NaHg) produces EPR signals assignable to Zr(III) metallocene complexes. The chloro-bridged heterodinuclear ansa-zirconocenium cation [(SBI)Zr(μ-Cl) 2AlMe2]+ (S
METHOD FOR PRODUCING TRIMETHYL ALUMINUM-DIMETHYL ALUMINUM HYDRIDE COMPOSITION
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Paragraph 0140 - 0144, (2017/05/12)
PROBLEM TO BE SOLVED: To provide a trimethyl aluminum-dimethyl aluminum hydride capable of attaining the reduction of production cost. SOLUTION: Methyl aluminum halides and alkali metals of below 1 mol to 1 mol of the halogen atoms of the methyl aluminum halides are reacted to produce a mixture containing trimethyl aluminum and dimethyl aluminum halide, and thereafter, the mixture and a metal hydride are reacted to produce dimethyl aluminum halide. SELECTED DRAWING: None COPYRIGHT: (C)2016,JPOandINPIT