Citation: Seo, Jun Min; Jo, Hongil; Choi, Myung Ho; Ok, Kang Min; Chang, Hong Young; Kim, Sun Woo (2024). Polymorphisms in M2+AlF5(H2O)7 (M2+ = Fe2+, Co2+, or Ni2+): Syntheses, Crystal Structures, and Characterization of New Mixed Metal Fluoride Hydrates. Crystals, 14, pp. 197-.