| Name: | DOWNEYITE | ||
| Specification: | [2], syn, at 139oK | ||
| Formula: | SeO2 | ||
| Symmetry Class: | tetragonal | ||
| Space Group: | P 4(2)/mbc | ||
| Unit Cell Parameters: | a = 8.3218 | c = 5.0541 | ||
| Number of Formula Unit: | Z = 8 | Unit Cell Volume, Å3: | Vc = 350.01 |
| Number of Atomic Position per full Unit Cell: | P/U = 24 | Molar Volume, cm3/mol: | Vm = 26.35 |
| Number of Reflexes used in Structure Determination: | - | X-ray density, g/cm3: | p = 4.21 |
| R-factor: | - | MU, 1/cm: | µ = 287.787 |
| Wave Length for Calculated Powder Diffraction Patterns: | Cu=1.54056 | Mass attenuation coefficient, cm2/g: | µ/p = 68.358 |
| Theta-Interval for CPDP: | T/I = 1-45 | ||