[Na4(N5)4(H2O)2]·H2O·2MeOH: a honeycomb-like sodium pentazolate framework with helical chains

Abstract

A new NaN₅ framework, [Na₄(N₅)₄(H₂O)₂]·H₂O·2MeOH, was synthesized by changing the content of auxiliary ligands. It features a UNJ-type zeolite topology with double right-handed helical chains constructing enclosed channels filled with water and methanol molecules. This work demonstrates the structural diversity of NaN₅ frameworks, and their self-assembly can be regulated using appropriate solvents and additives.