The chrysazin-Mg complex was synthesized by controlled precipitation method in this article.The samples were character-ized by elemental analysis,infrared spectrum,ultraviolet spectrum,X-ray diffraction and thermogravimetric analysis.The moisture resistance of the compound was investigated by aging experiment.The structure of chrysazin-Mg complex was optimized and simula-ted by Gaussian density functional theory.The results show that magnesium content of the chrysazin-Mg complex is about 4.94％without impurity of Mg(OH)2,and the yield was 88％.After 72 h accelerated aging evaluation,it can be seen that the shape of the powder column with chrysazin-Mg complex is intact without cracking phenomenon,which meets the application requirement of solid propellant combustion stabilizer.The spectral properties and steady-state structure of the complex were obtained by the simulation calculation.The central magnesium was in a hexagonal octahedral configuration,the chrysazin-Mg was connected to magnesium in a"head-to-head"arrangement,the two crystal waters were located on both sides of the chrysazin plane,and the central magnesium was in a saturated coordination state,which explained the good moisture resistance.
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