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Acta Armamentarii ›› 2014, Vol. 35 ›› Issue (10): 1569-1574.doi: 10.3969/j.issn.1000-1093.2014.10.008

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The Crystal Structure and Theoretical Study of Styphnic/14-dioxane Solvate

CHEN Peng-yuan, ZHANG Lin, ZHU Shun-guan, CHENG Guang-bin   

  1. (School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China)
  • Received:2013-12-13 Revised:2013-12-13 Online:2014-11-28
  • Contact: CHEN Peng-yuan E-mail:chenpengyuan@outlook.com

Abstract: In order to explore the mechanism of co-crystal explosive formation, styphnic/1,4-dioxane solvate was prepared by solvent evaporation method. This solvate structure was characterized by single crystal X-ray diffraction. Structural analysis shows that O in 1,4-dioxane forms —OH…O strong hydrogen bond with OH in styphnic. Moreover, H in 1,4-dioxane forms CH…O—NO weak intermolecular interaction with nitro group in styphnic. These two kinds of interactions are the main driving force for solvate composing. The Mulliken charge and density of state of both styphnic and styphnic/1,4-dioxane solvate are calculated. The result shows that the nitro group has more negative charge in the solvate than that in the pure styphnate. P orbital plays an important role in the buildup of the solvate and H in styphnate hybridizes with O in 1,4-dioxane.

Key words: ordnance science and technology, solvate, crystal, intermolecular interaction, hydrogen bond

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