The new dual anion solvent-free nickel complex based on the pyridine-4-carbohydrazide ligand

Based on the ideas of coordination and design chemistry, we propose a new strategy to balance the energy and sensitivity conflict by synthesizing dual anion structures in the realm of energetic complex compounds. Therefore, a novel solvent-free complex, [Ni(4-PDCA)₂(NO₃)₂](ClO₄)₂ (ECCs-1), which has a six-coordinated octahedral structure and contains dual anions, was synthesized. The structure was identified by IR, EA and single-crystal XRD. To the best of our knowledge, it is the first reported dual anion structure that exhibits excellent insensitivity with acceptable thermal stability and detonation performance.