Trimethylamine alane

Grafstein, D., and C. Vogel The Chemistry of Alane, VI. Preparation of an Aluminium Difluoramide from Trimethylamine-Alane and Difluor-amine. J. Amer. chem. Soc. 88, 1576 (1966). 

Trimethylamine alane has been used for A1 deposition on various SAMs functionalized with —COOH, -OH, and -CH3 terminal groups. No reaction was observed with -CH3 but reactions were observed with -OH and -COOH. In the latter cases room temperature deposition created A1 oxide and A1 layers under conditions of N2 purging and UHV, respectively [79, 88, 89]. 

Complexes with one and two amines are common. For example, bis-(trimethylamine) alane, A1H3(N(CH3)3)2, is a white crystalline solid with a low vapor pressure. Using ammonia as a model for trimethylamine, apply orbital interaction analysis to describe the bonding in the 1 1 and 1 2 complexes. Theoretical studies on the ammonia complexes of AIH3 have led to the conclusion that there is little dative bonding (as judged by the amount of charge transfer) (Marsh, C. M, B. Schaefer III, H. F., J. Phys. Chem., 1995, 99, 14309-14315). Comment on the theoretical results. 

Fig. 7. The molecular structures of trimethylamine-alane ) and trichloro(trimethylamine)aluminum in the gas phase...

The molecular structures of trimethylamine-alane and trichlorotrimethylamine-aluminum as determined by gas-phase electron diffraction, are shown in Fig. 7. The latter compound has also been studied by X-ray diffraction and the Al-N bond distance obtained in that study [ 1.96(1) A] is included in the Fig. 7. The other parameters were more accurately determined by electron diffraction. 

Trifluoromethyl radical, RSE, 113 as Z substituent, 109 Trimesitylsilicenium cation, 108 6 -(Trimethylamine)alane, 305 Trans effect, 181 effect of ligands, 181 Transition metal bonding orbitals, 176-178 Transition metals, 175-176 orbital energies, 178-179 and j8 scale, 179 table, 176... 

Dimethylamine condensed into an evacuated flask containing a soln. of trimethylamine alane in ether, the mixture allowed to warm slowly to room temp., H2 removed when its evolution has ceased, unchanged dimethylamine recondensed into the flask, and the product isolated after no further Hg-evolution is observed bis(dimethylamino)alane. Y 91%.—The use of trimethylamine alane in place of aluminum hydride permits a wider choice of solvent and reaction temp. F. e. and methods s. J. K. Ruff, Am. Soc. 83, 2835 (1961). 

C3H10AIK, Potassium hydridotrimethylaluminate, 40B, 675 C3H12AIN, Trimethylamine-alane (gas-ed), 38B, 1062 CaHijGaN, Trimethylaminegallane, 28, 596... 

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