Information card for entry 9008500

Structure parameters

• Common name: Helium
• Mineral name: Helium
• Formula: He
• Calculated formula: He
• SMILES: [He]
• Title of publication: Second edition. Interscience Publishers, New York, New York Sample at T = 2 K Hexagonal closest packed, hcp, structure
• Authors of publication: Wyckoff, R. W. G.
• Journal of publication: Crystal Structures
• Year of publication: 1963
• Journal volume: 1
• Pages of publication: 7 - 83
• a: 3.57 Å
• b: 3.57 Å
• c: 5.83 Å
• α: 90°
• β: 90°
• γ: 120°
• Cell volume: 64.348 ų
• Ambient diffraction temperature: 2 K
• Number of distinct elements: 1
• Space group number: 194
• Hermann-Mauguin space group symbol: P 63/m m c
• Hall space group symbol: -P 6c 2c
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No