| Name: | CORUNDUM | ||
| Specification: | [2], alpha, structure type - corundum, at 2170oK | ||
| Formula: | Al2O3 | ||
| Symmetry Class: | trigonal | ||
| Space Group: | R 3(-)c | ||
| Unit Cell Parameters: | a = 4.8440 | c = 13.2700 | ||
| Number of Formula Unit: | Z = 6 | Unit Cell Volume, Å3: | Vc = 269.66 |
| Number of Atomic Position per full Unit Cell: | P/U = 30 | Molar Volume, cm3/mol: | Vm = 27.07 |
| Number of Reflexes used in Structure Determination: | NR = 82 | X-ray density, g/cm3: | p = 3.77 |
| R-factor: | R = 0.0380 | MU, 1/cm: | µ = 117.254 |
| Wave Length for Calculated Powder Diffraction Patterns: | Cu=1.54056 | Mass attenuation coefficient, cm2/g: | µ/p = 31.135 |
| Theta-Interval for CPDP: | T/I = 1-45 | ||