1,1′-二氧化-5,5′-偶氮四唑二钾盐的合成与热性能（英文）

Synthesis and Thermal Properties of 1,1′-Dioxide-5,5′-azotetrazole Dipotassium Salt

以溴化氰、叠氮化钠和50%羟胺水溶液为原料,经叠氮化-环化和氧化偶联两步反应合成出了1,1′-二氧化-5,5′-偶氮四唑二钾盐,两步反应的收率分别为78%和82%。用红外光谱、核磁共振和元素分析表征了其结构。以差示扫描热分析(DSC)和热重分析(TG-DTG)研究了热性能。结果表明,1,1′-二氧化-5,5′-偶氮四唑二钾盐在271.0℃和328.0℃处分别有两个热分解峰,320℃时总热失重量为37.5%。

1,1 ＇-Dioxide-5,5＇-azotetrazole dipotassium salt was synthesized via two-step reactions of azido-cyclization and oxidation-coupling using cyanogen bromide, sodium azide and 50% solution of hydroxylamine as raw materials. The yields of two-step reactions were 78% and 82%, respectively. The structure of 1,1 ＇-dioxide-5,5＇-azotetrazole dipotassium salt was characterized by infrared spectrum （ IR）, nuclear magnetic resonance （ NMR）, elemental analysis and thermal properties were studied by differential scanning calorimetry （DSC） and thermogravimetry-derivative thermo- gravimetry （ TG-DTG）. Results show that there were two thermal decompositon peaks at 271.0 ℃ and 328.0℃ under heating condition, respectively, while possess a total mass loss of 37.5% before 320 ℃ for 1,1 ＇-dioxide-5 ,5＇-azotetrazole dipotassium salt.