Information card for entry 7720760

Structure parameters

• Common name: Goethite
• Chemical name: alpha-FeOOH
• Formula: Fe H O2
• Calculated formula: Fe H O2
• Title of publication: Refining hydrogen positions in α-FeOOH through combined neutron diffraction and computational techniques.
• Authors of publication: Nambu, Yusuke; Kuwabara, Akihide; Kawamata, Masahiro; Mori, Seira; Okazaki, Megumi; Maeda, Kazuhiko
• Journal of publication: Dalton transactions (Cambridge, England : 2003)
• Year of publication: 2026
• a: 9.9544 ± 0.0003 Å
• b: 3.02469 ± 0.0001 Å
• c: 4.60406 ± 0.00017 Å
• α: 90°
• β: 90°
• γ: 90°
• Cell volume: 138.624 ± 0.008 ų
• Cell temperature: 430.1 ± 0.9 K
• Ambient diffraction temperature: 430.1 ± 0.9 K
• Number of distinct elements: 3
• Space group number: 62
• Hermann-Mauguin space group symbol: P n m a
• Hall space group symbol: -P 2ac 2n
• Residual factor R(I) for significantly intense reflections: 11.4565
• Method of determination: powder diffraction
• Diffraction radiation wavelength: 1.34171 Å
• Diffraction radiation type: neutron
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No