Search: Crystallography, Sodium
Cold working of sodium metal converts body centred sodium metal to a mixture of a hexagonal form and body centred sodium at 5 K. The hexagonal from converts back to the body-centred form at 100-100 K.
Cold working of lithium metal converts body centred lithium metal to a mixture of a hexagonal form and body centred lithium at 78 K.
Potassium, rubidium, and caesium retain their body centred structure after coolingX-ray study of the alkali metals at low temperatures, , Acta Crystallographica, 08/1956, Volume 9, Issue 8, p.671 - 677, (1956)
Crystal structure of uranium nitride, UN. The structure is face-centered cubic with a lattice constant of 4889 ± 0.001 Å at 26°C and sodium chloride type. The theoretical density is 14315 kg m–3, and the U—N bond distance for coordination number 6 is 2.4449 Å.Crystallographic Data. 177. Uranium Mononitride, , Analytical Chemistry, 01/1959, Volume 31, Issue 1, p.156 - 157, (1959)