二硝基甲烷钾盐的晶体结构与热行为（英文）  

Crystal Structure and Thermal Behavior of Potassium Dinitromethane

作　　者：孙倩[1] 王晓晖[1] 徐抗震[1] 李彦峰[1] 宋纪蓉[1] 赵凤起[2] 

机构地区：[1]西北大学化工学院,陕西西安710069 [2]西安近代化学研究所,陕西西安710065

出　　处：《含能材料》2016年第9期874-879,共6页Chinese Journal of Energetic Materials

基　　金：Supported by the National Natural Science Foundation of China(21241003)

摘　　要：合成了二硝基甲烷钾盐{K[CH(NO_2)_2]}n并得到了其单晶。该晶体属于三斜晶系,P-1空间群,晶胞参数:a=4.5285(11)b=7.0377(17)c=7.8543(19)α=70.671(3)°,β=88.557(3)°,γ=75.818(4)°,V=228.58(10)~3,Z=2,D_c=2.094g·cm^(-3),F(000)=144,S=1.060,μ(Mo Kα)=1.077mm^(-1),R1=0.0457,wR-32=0.1399,(Δp)max=0.484e·和(Δp)min=-1.278e·^(-3)。用DSC和TG-DTG方法研究了{K[CH(NO_2)_2]}n的热分解行为,呈现出两个放热过程。{K[CH(NO_2)_2]}n的自加速分解温度和临界爆炸温度分别是161.0℃和162.8℃。{K[CH(NO_2)_2]}n的热稳定性比K(DNDZ)和K(AHDNE)低,比K(NNMPA)的热稳定性高。{K[CH(NO_2)_2]}n相对不敏感。Potassium dinitromethane {K[CH（NO2）2]}n was synthesized. The single-crystal structure of { K[ CH （ NO2 ）2 ] } n was determined, which is triclinic, space Group P-1 with crystal parameters of a=4.5285（11）A.b=7.0377（17）A.c=7.8543（19）A,α=70.671（3）°,β=88.557（3）°,γ=75.818（4）°,V=228.58（10）A^3,Z=2,Dc=2.094g·cm^-3,F（000）=144,S=1.060,μ（Mo Kα）=1.077mm^-1,R1=0.0457,wR-32=0.1399,（Δp）max=0.484e·A^-3 and （Δp）min=-1.278e·A^-3. Thermal behavior of t KE CH （ NO2 ） 2 ]} n was studied by DSC and TG-DTG methods. DSC result presented two exothermic processes. The self-accelerating decomposition temperature and critical temperature of thermal explosion of { K[CH（NO2）2]}n are 161.0 ℃ and 162. 8 ℃, respectively. { K[CH（NO2）2]}n presents lower thermal stability than K（DNDZ） and K（ AHDNE）, but higher thermal stability than K（NNMPA）. { K[ CH （NO2 ）2 ] } n is relatively insensitive.

关 键 词：1-氨基-1-肼基-2 2-二硝基乙烯 二硝基甲烷钾盐 晶体结构 热行为 

分 类 号：TQ560.1[化学工程—炸药化工]