The preparation and structures of the alkaline earth iron oxyhalides

• Published in: Journal of solid state chemistry 1991-06, Vol.92 (2), p.496-513
• Main Author: Ackerman, John F.
• Format: Article
• Language: English
• Subjects: Chemistry; Condensed matter: structure, mechanical and thermal properties; Elements and non-metal compounds (oxides, hydroxides, hydrides, sulfides, carbides, ...); Exact sciences and technology; Inorganic chemistry and origins of life; Inorganic compounds; Physics; Preparations and properties; Structure of solids and liquids; crystallography; Structure of specific crystalline solids; Water, oxides, hydroxides, peroxides
• ISSN: 0022-4596; 1095-726X
• DOI: 10.1016/0022-4596(91)90356-M

The title compounds have been synthesized and crystallized in a variety of structure types. Three of these structure types have been identified via single crystal structure determinations. CaFeO 2Cl is monoclinic; space group Am with a = 8.712(5) Å, b = 3.828(1) Å, c = 9.999(4) Å, β = 103.53(4)°, and Z = 4. Ca 2FeO 3Cl is tetragonal; space group P4 with a = 3.848(2) Å, c = 13.65(1) Å, and Z = 2. Sr 3Fe 2O 5Cl 2 is also tetragonal; space group I4/ mmm with a = 3.952(1) Å, c = 23.807(3) Å, and Z = 2 . In each of these structures, distinct layers can be identified. Mossbauer measurements of single crystals are presented.