New Method for Synthesis and Crystallizing of HNIW in Nitric Acid
HNIW was synthesized by hydrolysis-nitration in aqueous nitric acid and nitrates system from the precursors of tetraacetyldiformylhexaazaisowurtzitane (TADFIW; tetraacetylhexaazaisowurtzitane (TAIW); and tetraacetyldibenzylhexaazaisowuttzitane (TADBIW); with the yield of 95.0％. And the epsilon crystal form of HNIW was obtained in the same reaction system by adding e-HNIW crystal seeds during the preparing the title compound. The title compound was analyzed by means of 1H NMR, IR, MS, and elemental analysis. The purity of ε-HNIW was higher than 98.0％ and the yield was 93.3％. The synthesis and crystal transition of HNIW can be accomplished in one pot in aqueous system. So, the process route was shorter and safer. No organic solvent was used in the crystal transition of the HNIW from gamma to epsilon form.
HNIW synthesis hydrolysis-nitration crystal transition characterization
LU Lianying XU Baoen MA Zhizhong YUE Hongkun MU Wei OU Yuxiang
Chemistry Department, Shijiazhuang University, Shijiazhuang 050035, Hebei, China Water Supply and Drainage Dept., Shijiazhuang Institute of Municipal Design and Research, Shijiazhua School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
国际会议
西安
英文
64-65
2007-10-23（万方平台首次上网日期，不代表论文的发表时间）