An official website of the European Union How do you know?      
European Commission logo
JRC Publications Repository Menu

Pressure-dependent Deuterium Reaction Pathways in the Li-N-D System

cover
Neutron diffraction data from in situ deuteration of Li3N are presented under different pressure regimes, whereby reaction pathways differing from a two-stage (nitride- imide-amide) process are observed. At sufficiently high pressures, where the deuterium chemical potential is comparable with the heat of amide formation, the reaction appears to be driven straight to the amide plus deuteride phase mixture. At lower pressures, cubic phases exhibiting a concentration-dependent variation in lattice parameter are observed, interpreted here in terms of non-stoichiometric compounds covering two compositional ranges, with Li:N above and below that of the stoichiometric imide, Li2NH. It is argued that compounds with Li:N < 2 are compositionally intermediate between Li2NH and LiNH2, whilst those with Li:N > 2 are intermediate between Li4NH and Li2NH. The structural similarity between the cubic Li2NH phase and the tetragonal phases of Li4NH and LiNH2 is proposed to be a key factor in enabling a continuous variation in lattice parameter.
2010-02-23
ROYAL SOC CHEMISTRY
JRC51668
1463-9076,   
www.rsc.org/pccp,    https://publications.jrc.ec.europa.eu/repository/handle/JRC51668,   
10.1039/b903821n,   
Language Citation
NameCountryCityType
Datasets
IDTitlePublic URL
Dataset collections
IDAcronymTitlePublic URL
Scripts / source codes
DescriptionPublic URL
Additional supporting files
File nameDescriptionFile type 
Show metadata record  Copy citation url to clipboard  Download BibTeX
Items published in the JRC Publications Repository are protected by copyright, with all rights reserved, unless otherwise indicated. Additional information: https://ec.europa.eu/info/legal-notice_en#copyright-notice