Self-assembled energetic 3D metal-organic framework [Na-8(N-5)(8)(H2O)(3)](n) based on cyclo-N-5(-)

From a 1D sodium-N-5(-) framework, a new zeolite-like metalorganic framework (MOF) with a fascinating 3D structure was successfully constructed. It exhibited an enhanced thermal stability with a decomposition temperature (onset) of 129 degrees C and an enhanced coordination ability (five-coordination) of cyclo-N-5(-) 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.