C-F, C-x polyhedra, Phase transitions, Tetragonal

• C-F-H-Mn-O
• C-Cl-F-H-Mn-O
• C-F-Hg-O
• C-F-H-N-O-Pt-Tl
• C-Cu-F-H-N
• fusion
• temperature for congruent melting
• halogen
• non-disordered
• chalcogen
• transitional