Information card for entry 1520871

Structure parameters

• Chemical name: Na2 (U O2)2 (Si O4) F2
• Formula: F2 Na2 O8 Si U2
• Calculated formula: F2 Na2 O8 Si U2
• Title of publication: The crystal structure of Na2 (U O2)2 Si O4 F2, a compound structurally related to soddyite, and formed during uranyl silicate synthesis in Teflon-lined bombs
• Authors of publication: Blaton, N.; Vochten, R.; Peters, O.M.; van Springel, K.
• Journal of publication: Neues Jahrbuch fuer Mineralogie. Monatshefte (Band=Jahr) (1950-)
• Year of publication: 1999
• Journal volume: 1999
• Pages of publication: 253 - 264
• a: 6.975 Å
• b: 6.975 Å
• c: 18.31 Å
• α: 90°
• β: 90°
• γ: 90°
• Cell volume: 890.793 ų
• Number of distinct elements: 5
• Space group number: 141
• Hermann-Mauguin space group symbol: I 41/a m d :2
• Hall space group symbol: -I 4bd 2
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No