Backbone NxH Compounds at High Pressures

2014/09/03 by Alexander F. Goncharov, Goncharov, Alexander F., Nicholas Holtgrewe +25
Earth and Planetary Sciences · Physics and Astronomy · #Advanced Chemical Physics Studies #Astro and Planetary Science #FOS: Physical sciences #High-pressure geophysics and materials #Materials Science (cond-mat.mtrl-sci)

paper · pdf · doi:10.48550/arxiv.1409.1181

openalex publication_date 2014/09/03 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

Optical and synchrotron x-ray diffraction diamond anvil cell experiments have been combined with first principles theoretical structure predictions to investigate mixed N2 and H2 up to 55 GPa. We found the formation of oligomeric NxH (x>1) compounds using mechano- and photochemistry at pressures above 47 and 10 GPa, respectively, and room temperature. These compounds can be recovered to ambient pressure at T<130 K, whereas at room temperature, they can be metastable down to 3.5 GPa. Our results suggest new pathways for synthesis of environmentally benign high energy-density materials and alternative planetary ice.

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