High-Pressure Synthesis of Metal-Inorganic Frameworks Hf₄ N₂₀ ⋅N₂ , WN₈ ⋅N₂ , and Os₅ N₂₈ ⋅3 N₂ with Polymeric Nitrogen Linkers.

ABSTRACT: Polynitrides are intrinsically thermodynamically unstable at ambient conditions and require peculiar synthetic approaches. Now, a one-step synthesis of metal-inorganic frameworks Hf₄ N₂₀ ⋅N₂ , WN₈ ⋅N₂ , and Os₅ N₂₈ ⋅3 N₂ via direct reactions between elements in a diamond anvil cell at pressures exceeding 100 GPa is reported. The porous frameworks (Hf₄ N₂₀ , WN₈ , and Os₅ N₂₈ ) are built from transition-metal atoms linked either by polymeric polydiazenediyl (polyacetylene-like) nitrogen chains or through dinitrogen units. Triply bound dinitrogen molecules occupy channels of these frameworks. Owing to conjugated polydiazenediyl chains, these compounds

SUBMITTER: Bykov M 

PROVIDER: S-EPMC7317814 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature