Self-assembled energetic 3D metal-organic framework [Na8(N5)8(H2O)3]n based on cyclo-N5.

From a 1D sodium-N5- framework, a new zeolite-like metal-organic framework (MOF) with a fascinating 3D structure was successfully constructed. It exhibited an enhanced thermal stability with a decomposition temperature (onset) of 129 °C and an enhanced coordination ability (five-coordination) of cyclo-N5- in weak alkaline conditions. The 3D MOF with a bulky size offers new opportunities not only for the formation of porous materials but also to control the balance between the performance and stability of polynitrogen materials.