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3,4-双(3-硝基呋咱-4-氧基)呋咱醚的合成、晶体结构和热性能研究(英文)
Synthesis,Crystal Structure and Thermal Behavior of 3,4-Bis(3-nitrofurazan-4-oxy)furazan
【Author】 HUANG Xin-ping,ZHAI Lian-jie,WANG Bo-zhou,LI Pu-ui,CHANG Pei (Xi’an Modern Chemistry Research Institute,Xi’an 710065,China)
【机构】 西安近代化学研究所;
【摘要】 以3,4-二氨基呋咱为原料,经过Caro’s酸氧化、水解、中和、取代反应得到了目标化合物3,4-双(3-硝基呋咱-4-氧基)呋咱醚,通过红外、核磁、元素分析、单晶等对化合物的结构进行了分析。目标化合物的为单斜晶系,P21/c空间群,晶体参数a=15.256(3),b=11.579(3),c=14.981(3)(?),β=117.624(4)°,Mr=328.14,V=2344.7(9)(?)3,Z=8,Dc=1.859g/cm3,F(000)=1312,μ=0.177 mm-1,S=1.012,R=0.0433,wR=0.0987。单晶结构分析表明,晶系中存在两种构象不同的两种分子,且分子中存在大量弱键,使得3,4-双(3-硝基呋咱-4-氧基)呋咱醚具有较高密度.利用TG-DTA和DSC对目标化合物的热性能进行了研究,熔点为72.9℃,245~346℃之间分解。
【Abstract】 3,4-Bis(3-nitrofurazan-4-oxy)furazan(1) was synthesized from 3,4-diaminofurazan by Caro’s acid oxidation, hydrolysis,neutralization and substituent reactions,and its structure was characterized by IR,NMR,elemental analysis,and X-ray single-crystal diffraction analysis.The crystal belongs to the monoclinic system,space group is P2I/c with a=15.256(3),b= 11.579(3),c=14.981(3) A,β=117.624(4)°,Mr = 328.14,V= 2344.7(9) A3,Z=8,Dc=1.859 g/cm3,F(000) = 1312,μ=0.177 mm-1,S=1.012,the final R=0.0433 and wR=0.0987.X-ray single-crystal diffraction analysis indicate that 3,4-bis(3-nitrofurazan- 4-oxy) furazan crystallizes in two crystallographic independent host molecules with different conformation and several intermolecular interactions lead to a high density in the asymmetric unit.The thermal behavior of copound 1 was studied by using TG-DTA and DSC techniques.The results show that it melts at 72.9℃,produces an successive thermolysis between 245 and 346℃.
- 【会议录名称】 第二届全国危险物质与安全应急技术研讨会论文集
- 【会议名称】第二届全国危险物质与安全应急技术研讨会
- 【会议时间】2013-11-14
- 【会议地点】中国四川成都
- 【分类号】O626
- 【主办单位】中国工程物理研究院、北京理工大学、中国化学会