Examination of the 'H[zH] D N M R spectrum of (isopropyl-2-d)(methyl-d3)(ethyl-2,2,2-d3)amine in CBrF3 reveals for the first time in an acyclic trialkylamine two distinctly different coalescence phenomena one of which can be assigned to nitrogen inoersion (AH* = 8.3 f 0.5 kcal/mol; AS* = 5.5 f 4.0 gibbs; AG* = 7.5 f 0.2 kcal/mol at -1 21.3 "C) and the other to C-N bond rotation (AH* = 5.3 f 0.3 kcal/mol; AS* = -3 f 2 gibbs; AG* = 5.6 f 0.2 kcal/mol at -157.8 "C).

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Large-area, high-uniformity, and high-density single wall carbon nanotubes (SWNTs) were fabricated by ethanol at 900°C in a tubular furnace. The Fe(NO 3 ) 3 ‚9H 2 O and the ICP/DCP standard solution of Mo were reacted to deposit SWNTs on the surface of the MgO sol-gel nanopowders. SWNTs have diameters in the range of 0.6-1.6 for SWNTs in bundles, and diameters in the range of 2-6 nm for isolated SWNTs were identified by the high-resolution transmission electron microscope and the breathing mode of the Raman spectrrum. A high yield of the as-synthesized SWNTs is over 500 wt % relative to the Fe-Mo metal in the catalyst. The extremely low turn-on field E to ) 0.008 V/µm and threshold field E thr ) 0.07 V/µm show that the SWNTs have an excellent performance on the electron field emission.

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Durch Reaktion der C,C′‐Dilithioderivate der Carborane mit N,N‐Dimethylcarbamoyl‐ Chlorid in Äther bei 0°C werden die Titelverbindungen dargestellt.