Chemistry Nexus
by WebElements: the periodic table on the web
X-ray study of the alkali metals at low temperatures
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 cooling.
WebElements December 24th, 2009
Posted In: Chemistry, Crystallography, Group 1 elements
Crystallographic Data 186. Lithium
Lithium at room temperature is body-centered cubic with 2 atoms per unit cell. The lattice constant for lithium metal is 3.51004 ± 0.00041 Å at 25°C. The theoretical density is 533 kg m–3 and the Li—Li bond distance for coordination number 8 is 3.0398 Å.1
SMILES: [Li]InChI: InChI=1/Li
References
WebElements December 24th, 2009
Posted In: Chemistry, Crystallography, Group 1 elements
Tags: Lithium