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<p>This study reports a metamorphosis of carbohydrazide (CHZ) that simultaneously acts as both a ligand and a linker in a complexation reaction with the Co(II) and Ni(II) cations in the synthesis of new 3D energetic metal-organic frameworks (EMOFs) containing dinitramide (DNA). The 3D coordination model of CHZ differs from the known ones. Complexes [M(CHZ)<sub>2</sub>](N(NO<sub>2</sub>))<sub>2</sub> (where M: Co, Ni) demonstrate excellent characteristics, including higher density, improved oxygen balance, and high energy compared to their tris-carbohydrazide analogs [M(CHZ)<sub>3</sub>](N(NO<sub>2</sub>))<sub>2</sub> (where M: Co, Ni). X-ray diffraction shows a continuous framework formed by CHZ via the µ-N, O, N′ coordination with metal cations (Co, Ni).</p> Graphical abstract <p></p>

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Skeletal metamorphosis of carbohydrazide: a novel reaction toward 3D EMOFs based on Co(II) and Ni(II)

  • 期刊论文

  • 发表日期：

    2026年3月23日

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  • Sergey G. Il’yasov,
  • Dmitri S. Il’yasov,
  • Tatyana V. Rybalova,
  • Natalia V. Pervukhina

摘要

This study reports a metamorphosis of carbohydrazide (CHZ) that simultaneously acts as both a ligand and a linker in a complexation reaction with the Co(II) and Ni(II) cations in the synthesis of new 3D energetic metal-organic frameworks (EMOFs) containing dinitramide (DNA). The 3D coordination model of CHZ differs from the known ones. Complexes [M(CHZ)2](N(NO2))2 (where M: Co, Ni) demonstrate excellent characteristics, including higher density, improved oxygen balance, and high energy compared to their tris-carbohydrazide analogs [M(CHZ)3](N(NO2))2 (where M: Co, Ni). X-ray diffraction shows a continuous framework formed by CHZ via the µ-N, O, N′ coordination with metal cations (Co, Ni).

Graphical abstract