Self-assembled energetic coordination polymers based on multidentate pentazole cyclo-N5−

摘要: Coordination to form polymer is emerging as a new technology for modifying or enhancing the properties of existed energetic substances in materials area. In this work, guanidine cation CN3H6+ (Gu) and 3-amino-1,2,4-triazole C2H4N4 (ATz) were crystallized into NaN5 two novel coordination polymers (CPs), (NaN5)5[(CH6-N3)N5](N5)3– ( 1 ) (NaN5)2(C2H4N4) 2 prepared respectively via self-assembly process. The crystal structure reveals co-existence chelating pentazole anion organic component solid state. , Na+ N5– coordinated cage which [C(NH2)3]+ was trapped; mixed-ligand system observed; ATz coordinate separately with independent but interweaved nets. way, has been successfully utilized modify specific through crystallization. Benefiting from weak interactions, decomposition temperatures both increase 111°C (1D [Na(H2O)(N5)]∙2H2O) 118.4 126.5°C respectively. Moreover, no H2O generated products afford anhydrous compounds salts high heats formation (> 800 kJ mol–1). Compared traditional materials, advantage still obvious cyclo -N5– based CPs, highlights promising precursor energy density (HEDMs).