Ag(I)-based high-energy metal organic frameworks (HE-MOFs) incorporating coordinated moieties in channels: synthesis, structure and physicochemical properties

A new Ag(I)-based HE-MOFs, [Ag3(H2ZTO)3(NO3)2(CH3COO)]n (1, H2ZTO = 4,4′-azo-1,2,4-triazol-5-one), was successfully synthesized, which exhibited a compact 3D structure with channels incorporating coordinated NO3− and CH3COO− ions. Based on TG and DSC analyses results, a superior thermostability and rapidly thermal decomposition process exist in 1. The non-isothermal kinetic for exothermic process of 1 is studied by Kissinger's and Ozawa's methods. The sensitivity tests and calculated detonation properties show that 1 can be used as a potential explosive. By comparing 1 with the previously reported HE-MOFs atrz-1 and atrz-2, a revelation for regulating the heat of detonation of 3D HE-MOFs based on the coordinated moieties in channels has been found. In addition, 1 was explored as a combustion promoter to accelerate the thermal decomposition of RDX (1,3,5-trinitro-1,3,5-triazinane) by differential scanning calorimetry.