Information card for entry 1001787

Structure parameters

• Chemical name: Calcium hydroxide
• Mineral name: Portlandite
• Formula: Ca H2 O2
• Calculated formula: Ca H1.998 O2
• Title of publication: Hydrogen thermal motion in calcium hydroxide: Ca (O H)2
• Authors of publication: Desgranges, L; Grebille, D; Calvarin, g; Chevrier, G; Floquet, N; Niepce, J-C
• Journal of publication: Acta Crystallographica B (39,1983-)
• Year of publication: 1993
• Journal volume: 49
• Pages of publication: 812 - 817
• a: 3.589 ± 0.008 Å
• b: 3.589 ± 0.008 Å
• c: 4.911 ± 0.014 Å
• α: 90°
• β: 90°
• γ: 120°
• Cell volume: 54.8 ų
• Number of distinct elements: 3
• Space group number: 164
• Hermann-Mauguin space group symbol: P -3 m 1
• Hall space group symbol: -P 3 2"
• Residual factor for all reflections: 0.025
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No