| Name: | SELENIUM | ||
| Specification: | [4], structure type - gray selenium, syn | ||
| Formula: | Se | ||
| Symmetry Class: | trigonal | ||
| Space Group: | P 3(1)21 | ||
| Unit Cell Parameters: | a = 4.3662 | c = 4.9536 | ||
| Number of Formula Unit: | Z = 3 | Unit Cell Volume, Å3: | Vc = 81.78 |
| Number of Atomic Position per full Unit Cell: | P/U = 3 | Molar Volume, cm3/mol: | Vm = 16.42 |
| Number of Reflexes used in Structure Determination: | - | X-ray density, g/cm3: | p = 4.81 |
| R-factor: | - | MU, 1/cm: | µ = 673.140 |
| Wave Length for Calculated Powder Diffraction Patterns: | Cu=1.54056 | Mass attenuation coefficient, cm2/g: | µ/p = 140.000 |
| Theta-Interval for CPDP: | T/I = 1-45 | ||