Citation: Owens-Baird, Bryan; Xu, Junyuan; Petrovykh, Dmitri Y.; Bondarchuk, Oleksandr; Ziouani, Yasmine; Gonz\'alez-Ballesteros, Noelia; Yox, Philip; Sapountzi, Foteini M.; Niemantsverdriet, Hans; Kolen’ ko, Yury V.; Kovnir, Kirill (2019). NiP2: A Story of Two Divergent Polymorphic Multifunctional Materials. Chemistry of Materials, 31, pp. 3407-.