Structures of left-handed and right-handed cubic CoGe crystals (3 presentations, with different numbers of atoms per unit cell; orange atoms are Ge)
3D model (JSmol)
CompTox Dashboard (EPA)
|Molar mass||131.56 g/mol|
|C2/m (No. 12), mS16|
a = 1.165 nm, b = 0.3807 nm, c = 0.4945 nm
α = 90°, β = 101.1°, γ = 90°
Formula units (Z)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Cubic CoGe crystals (space group P213, cP8, a = 0.4631 nm) can be produced by processing a mixture of Co and Ge powders at a pressure of 4 GPa and a temperature of 800–1000 °C for 1–3 hours. They have no inversion center, and are therefore helical, with right-hand and left-handed chiralities. The cubic CoGe is metastable, and converts into a monoclinic phase upon subsequent heating to 600 °C at ambient pressure.