Preservation of High-Pressure Synthesized Pentazolate Anions Cyclo-N5⁻ Confined in Sp3-hybridized Boron Nitride

Key Points

• This research aims to address the challenge of preserving metastable pentazolate anions synthesized under high pressure when exposed to ambient conditions.
• Utilized high-pressure synthesis techniques for pentazolate anions.
• Investigated stability of synthesized materials under varying ambient conditions.
• Employed characterization methods to assess the structural integrity of confined materials.
• Successfully preserved pentazolate anions in sp3-hybridized boron nitride structures.
• Characterized stable phase retention, showing significant resistance to decomposing under ambient conditions.