Charge transfer on the metallic atom-pair bond, and the crystal structures adopted by intermetallic compounds

Rajasekharan, T.; Seshubai, V.

doi:10.1107/S0108767311044151

Figure 4
Percentage change in volume on alloying as a function of $[\Delta{N}^{1/3}]$ for MgCu₂-type compounds. The volume per molecule estimated from the molar volumes of the elements is subtracted from the volume per molecule computed from the unit-cell volumes of the compounds, and expressed as a percentage relative to the volume per molecule before alloying. It can be observed that the change in volume goes to zero when $[\Delta{N}^{1/3}]$ goes to zero. This observation supports the idea that $[\Delta{N}^{1/3}]$ is proportional to the charge transfer on alloying.