Stepwise Reactions in the Potassium and Ammonia-Intercalated Iron Selenide Superconductor Phase Diagram Followed by In Situ Powder Diffraction - Simon J. Cassidy; Daniel N. Woodruff; Stefan J. Sedlmaier; Jack N. Blandy; Christina Reinhard; Oxana V. Magdysyuk; Andrew L. Goodwin; Silvia Ramos; Simon J. Clarke (Journal of the American Chemical Society, 2025)