Figure8

Figure 8. Bond thermal expansion $$\mathrm{\Delta }{C_1}^{\ast }$$ for the first shell of scandium fluoride obtained by including (blue squares) or excluding (red circles) the third cumulant $${C_3}^{\ast }$$. In the present case, by neglecting the third cumulant, $$\mathrm{\Delta }{C_1}^{\ast }$$ is widely underestimated. The inset shows the temperature behavior of $$\mathrm{\Delta }{C_3}^{\ast }$$.