Observation of novel phases during deuteration of lithium nitride from in situ neutron diffraction

Autor: D. J. Bull, D.K. Ross, S.G. Keens, Eveline Weidner, Mark T. F. Telling, Igor L. Shabalin
Rok vydání: 2007
Předmět:
Zdroj: Chemical Physics Letters. 444:76-79
ISSN: 0009-2614
DOI: 10.1016/j.cplett.2007.07.010
Popis: We report on in situ neutron diffraction measurements during the deuteration of Li3N. A number of novel observations are described: The presence of cubic ‘quasi-imide’ phases with composition-dependent lattice parameters, the identification of Li4ND and the suppression of LiD formation at low deuterium content. On the basis of these observations, it is proposed that the quasi-imide phase is intermediate between Li4ND and Li2ND, having a composition Li2+yND. Charge balance is accomplished in this compound by the inclusion of both, formally, D- and D+, the latter species being present in the imide ion, (ND)2. 2007 Elsevier B.V. All rights reserved.
Databáze: OpenAIRE