The reaction products resulting from Eq. 2 include a binary salt LiCl and a ternary thiophosphate InPS 4 . Notably, the reaction presented in Eq. 2 is not a redox reaction, i.e., it does not involve a change in the oxidation states of the chemical species. It is instead a metathesis reaction. Further, the calculated reaction enthalpy of Eq. 2, ∆H = -75 kJ mol -1 is substantial. In practice, the value of ∆H is computed from the difference between the