Magnesium carbide, Mg2C3 has the CAS number of
12151-74-5 and is also offered for sale commercially. It
has a quasi-cubic structure, distorted along the c-axis
with unit-cell parameters of: a=3.7283 ?, b=5.2786 ? ,
c=6.4108 ? , α=90°, β=90°, γ=90°, cell volume=
126.17 ? 3, Z= 2.
