High-Temperature Equilibrium in the Germanium—Nickel System and the Dissociation Energy of GeNi

The GeNi molecule has been shown to exist in the vapor phase over liquid solutions of germanium and nickel above 2000°K. Using information derived from a combination of effusion and mass‐spectrometric techniques, the energies and equilibrium constants of the gaseous reactions GeNi+Ge=Ge₂+Ni and GeNi=Ge+Ni have been calculated. The values of the energy assuming a ¹Σ ground state of GeNi are $$\begin{array}{cc}\mathrm{GeNi}+\mathrm{Ge}={\mathrm{Ge}}_2+\mathrm{Ni}& {\mathrm{\Delta E}}_0^{\circ }\text{=1.6±4\hspace{0.17em}}\mathrm{kcal},\\ \mathrm{GeNi}=\mathrm{Ge}+\mathrm{Ni}\mathrm{\hspace{0.17em}\hspace{0.17em}}& D_0^{\circ }(\mathrm{GeNi}\text{)=66.4±4\hspace{0.17em}}\mathrm{kcal}.\end{array}$$ The dissociation energy of Ge₂ was also determined and the value of D₀°(Ge₂) of 64.9±3 kcal confirms results obtained previously.