Structure of ND3 solids I and II at high pressure by neutron diffraction
- 20 December 1984
- journal article
- research article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 81 (12) , 6034-6038
- https://doi.org/10.1063/1.447605
Abstract
A preliminary investigation of two solid phases of deuterated ammonia has been performed by single‐crystal neutron diffraction. At 5.1 kbar and 240 K, the newly discovered solid II was found to consist of orientationally disordered molecules in a hexagonal close‐packed lattice with space ground P63/mmc and lattice constants a=3.588(2) Å and c=5.870(2) Å. The primitive cubic structure (space group P213) of solid I was confirmed up to a pressure of 5.1 kbar at 215 K, where the lattice constant is 5.035(2) Å.Keywords
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