Ru
Ross, R.G.Hume-Rothery, W.
Journal of the Less-Common Metals (1963) 5, 258-270
a=2.724Å b=2.724Å c=4.332Å
α=90° β=90° γ=120°
Hf
a=3.23Å b=3.23Å c=5.12Å
a=3.61Å b=3.61Å c=3.61Å
α=90° β=90° γ=90°