23304-08-7Relevant academic research and scientific papers
Deuterium Lineshape Study of Tetrahedral Jumps in Solid Hexamethylenetetramine
Pschorn, O.,Spiess, H. W.
, p. 217 - 228 (1980)
The reorientational motion of hexamethylenetetramine (HMT) in the solid has been studied by 2H NMR.Powder spectra were tahen by wideline techniques in the temperature interval T=368 to 448 K. the lineshape changes from the powder pattern of a rigid solid (Pake diagram) to a narrow line, the total width of the spectrum being reduced from 250 to less than 1 kHz.For intermediate temperatures the lineshape consists of a superposition of a broad absorption and a narrow central component of virtually temperature-independent width.The data are analyzed in terms of a stochastic model of tetrahedral jumps.A simple computer program for the numerical calculation of the powder lineshape is described.The correlation times τ, obtained from lineshape analysis, follow a simple Arrhenius plot with an activation energy ΔE=70.2+/-3 kJ/mol.Extrapolation to lower temperatures shows excellent agreement with the results of an earlier 14N relaxation study of Alexander and Tzalmona; the Arrhenius plot thus extends over at least five orders of magnitude from τ ca. 0.3 sec to τ ca. 3*10-6 sec.
Synthetic method of deuterated hexogen
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Paragraph 0014; 0017; 0020, (2018/06/26)
The invention relates to a synthetic method of deuterated hexogen, specifically to deuteration technology of hydrogen atoms which are located on non-active carbon-hydrogen bonds inside energetic material molecules. The synthetic method is characterized by reacting a deuterated formaldehyde substance with an ammonia substance to obtain deuterated urotropine which is an intermediate; and further performing nitrification to obtain deuterated hexogen which is the final product. The method is simple and efficient in steps, safe to operate, and is simple in purification. The prepared deuterated hexogen product is high in purity, high in deuteration rate, and suitable for fields of neutron scattering research, energetic material research and nuclear magnetism research.
Synthesizing method of deuterated octogen
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Paragraph 0068; 0070; 0076-0081; 0095-0100; 0114-0119, (2017/08/29)
The invention discloses a synthesizing method of deuterated octogen. The synthesizing method is characterized by comprising the following steps of enabling a deuterated formaldehyde matter and an ammonia compound to react, so as to obtain an intermediate, namely deuterated urotropine; further acetylizing and nitrifying, so as to obtain an intermediate, namely 1,5-diacetyl-3,7-binitro-1,3,5,7-teraazamacrocycle octane; using nitric acid/phosphorus pentoxide to nitrify, so as to obtain the product with high selectivity, namely deuterated octogen. The deuterated octogen synthesized by the method has the advantages that the purity is high, the deuterating rate is high, and the deuterated octogen can be applied to the fields of neutron diffraction, energetic material study, analysis and detection, and the like.
