CHINESE JOURNAL OF ENERGETIC MATERIALS
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2,4-二硝基咪唑二甲基铵盐的制备及晶体结构
作者:
作者单位:

(1. 中国工程物理研究院化工材料研究所, 四川 绵阳 621900; 2. 西南科技大学材料科学与工程学院, 四川 绵阳 621010)

作者简介:

景梅(1987-),女,硕士研究生,主要从事新型含能材料的合成及性能研究。e-mail: jingmei19871025@163.com

通讯作者:

舒远杰(1969-),男,研究员,主要从事含能材料研究。e-mail: syjfree@sohu.com

基金项目:

中国工程物理研究院预研专题(KZ-10,2012B0302036,2013B0302039)


Preparation and Crystal Structure of N,N-dimethyl Ammonium Salt of 2,4-Dinitroimidazole
Author:
Affiliation:

(1. Institute of Chemical Materials, CAEP, Mianyang 621900, China; 2. Department of Materials Science and Engineering, Southwest Univeristy of Science and Technology, Mianyang 621010, China)

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    摘要:

    以2, 4-二硝基咪唑为原料, 经中和、取代两步反应合成出了2, 4-二硝基咪唑二甲基铵盐[(DNI)NH2(CH3)2], 产率为62.7%。用IR、1H NMR及13C NMR、元素分析和单晶X-射线衍射对其分子和晶体结构进行了表征。结果表明:该晶体属于单斜晶系, 空间群C2/c, a=31.403(5)Å, b=6.7133(7)Å, c=22.769(4)Å, α=90.00°, β =126.80(3)°, γ=90.00°, V=3843.6(10)Å3, Z=16, Dc=1.404 g ·cm-3, F(000) = 1696.0, μ (MoKα) = 0.121 mm-1。分子内及分子间氢键作用微弱, 分子堆积不紧密, 密度较小。并用TG-DSC对[(DNI)NH2(CH3)2]进行了热分解研究, 表明其分解经过两步, 熔点190.7 ℃, 热稳定性良好。

    Abstract:

    A new energetic salt of 2, 4-dinitroimidazole ([(DNI)NH2 (CH3)2]) was synthesized with yield of 62.7% by using 2, 4-dinitroimidazole as starting materials. The structure of [(DNI)NH2 (CH3)2] was characterized by IR, elemental analysis, fourcircle single crystal X-ray diffraction NMR. Results show that the crystal of title compound belongs to monoclinic system, space group C2/c with a=31.403(5)Å, b=6.7133(7)Å, c=22.769(4)Å, α= 90.00°, β =126.80(3)°, γ=90.00°, V=3843.6(10)Å3, Z=16, Dc=1.404 g ·cm-3, F(000) = 1696.0, μ (MoKα) = 0.121 mm-1. The molecule packing of [(DNI)NH2 (CH3)2] is not compacted. Intra molecular and intermolecular hydrogen bonds are weak and the density is lower. Thermal properties were tested by TG-DSC. Results reveal that the [(DNI)NH2 (CH3)2] shows good thermal stability.

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景梅,舒远杰,王军,等.2,4-二硝基咪唑二甲基铵盐的制备及晶体结构[J].含能材料, 2013, 21(6):702-705. DOI:10.3969/j. issn.1006-9941.2013.06.002.
JING Mei, SHU Yuan-jie, WANG Jun, et al. Preparation and Crystal Structure of N, N-dimethyl Ammonium Salt of 2,4-Dinitroimidazole[J]. Chinese Journal of Energetic Materials, 2013, 21(6):702-705. DOI:10.3969/j. issn.1006-9941.2013.06.002.

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  • 收稿日期: 2013-03-21
  • 最后修改日期: 2013-06-09
  • 录用日期: 2013-06-21
  • 在线发布日期: 2013-12-06
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